Class / Patent application number | Description | Number of patent applications / Date published |
359107000 | OPTICAL COMPUTING WITHOUT DIFFRACTION | 70 |
20090091812 | QUANTUM COMPUTER AND QUANTUM COMPUTATION METHOD - A quantum computer includes physical systems, included in an optical resonator, having at least four energy states, and in which letting |0>, |1>, |3>, and |2> be the four energy states, an energy of |2> is higher than energies of |0>, |1>, and |3>, a transition frequency of a |0>−|2> transition is equal to the resonance frequency, and |0> and |1> express a quantum bit, a first source emitting light that resonates with the optical resonator, a second source irradiating specific physical systems of the physical systems with light that couples |3> and |2>, a light detector detecting a photon emitted from the optical resonator, and a controller controlling the first source to irradiate the optical resonator with light and controlling the light detector to perform light detection during irradiation of the light that couples |3> and |2> from the second source to the specific physical systems. | 04-09-2009 |
20090213444 | QUANTUM COMPUTING METHOD AND QUANTUM COMPUTER - A quantum bit computation method includes operating a two-quantum-bit gate on quantum bits of a first physical system and a second physical system, second energy states of second physical systems except for the first physical system and the second physical system do not change, three energy states being represented by | | 08-27-2009 |
20090219597 | OPTICAL ANALYSIS SYSTEM AND OPTICAL TRAIN - A multivariate optical computing and analysis system includes a light source configured to radiate a first light along a first ray path; a modulator disposed in the first ray path, the modulator configured to modulate the first light to a desired frequency; a spectral element disposed proximate the modulator, the spectral element configured to filter the first light for a spectral range of interest of a sample; a cavity disposed in communication with the spectral element, the cavity configured to direct the first light in a direction of the sample; a tube disposed proximate the cavity, the tube configured to receive and direct a second light generated by a reflection of the first light from the sample, the tube being further configured to separate the first and second lights; a beamsplitter configured to split the second light into a first beam and a second beam; an optical filter mechanism disposed to receive the first beam, the optical filter mechanism configured to optically filter data carried by the first beam into at least one orthogonal component of the first beam; and a detector mechanism in communication with the optical filter mechanism to measure a property of the orthogonal component to measure the data. | 09-03-2009 |
20090273820 | PLASMOSTOR: A-METAL-OXIDE-SI FIELD EFFECT PLASMONIC MODULATOR - The invention is a system and method for performing all-optical modulation. A semiconductor layer having a defined thickness has an insulator adjacent one surface of the semiconductor. Conductive layers are provided adjacent the semiconductor layer and the insulator. A photodetector is provided to generate an electric field across the conductive layers in response to an input optical gate signal. An input optical signal is modulated by interaction with a plasmon wave generated at the semiconductor/conductive layer interface. By defining the thickness of the semiconductor layer, a desired wavelength of light supports the plasmon waves. Operation of the all-optical modulator requires the provision of an input optical signal of a desired wavelength and the provision of a gate optical signal. An output optical signal is recovered and can be used to store, display or transmit information, for example over a fiber optic communication system, such as a telecommunication system. | 11-05-2009 |
20090296178 | Optically reconfigurable logic circuit - To provide an optically reconfigurable logic circuit in which a mount area of an optical circuit is reduced as much as possible and a high gate density is realized. | 12-03-2009 |
20100027087 | IMPROVEMENTS TO OPTICAL CORRELATION APPARATUS - An optical correlation apparatus is taught which provides a parallel optical signal having a phase modulation representing input data to which a parallel phase modulation based on reference data is applied. In the event of correlation the resulting wavefront is planar and can be interferometrically coupled to give a high intensity signal. The invention involves use of parallel amplitude modulation means for selectively blocking the optical signal in one or more of the channels of the parallel optical signal which allows different sized reference data strings to be searched more easily and also aids in calibration. | 02-04-2010 |
20100033786 | Optical Waveguide Having Bistable Transmission States Suitable for Optical Logic Circuits - An optical circuit comprises a bistable optical waveguide ( | 02-11-2010 |
20100079833 | COHERENT PHOTONIC FREQUENCY CONVERSION (CPFC) FOR QUANTUM COMPUTING USING PUMPED FOUR-WAVE MIXING PROCESSES - A system and method for the controlled generation, manipulation, and conversion of individual photons in and for a quantum computing environment or a quantum communication environment are provided. Systems and methods for doubling a single photon in a first propagation mode into two new photons in one or two new propagation modes, combining two photons in one or two propagation modes into a single photon of a single propagation mode, and implementing a pi phase shift on a two-photon state but not on the one-photon state in a fully controlled, consistent, and repeatable fashion are also provided, as well as a source of individual photons having clearly defined and fully controllable properties. Embodiments of the above allow for generation and conversion operations that are up to 100% efficient. The generation, conversion, combination, and phase shifting operations are preferably carried out inside a non-linear χ | 04-01-2010 |
20100165432 | IMPROVEMENTS RELATNG TO OPTICAL VECTOR MATRIX MULTIPLIERS - Improved optical vector matrix multipliers are disclosed. The multipliers comprise: a plurality of light sources, each operable to radiate light of intensity u | 07-01-2010 |
20100309535 | Shutter-glass eyewear control - A method for shutter glass eyewear control provides for a command sequence having precise shutter timing and control information for opening and closing the left and right shutters of shutter glass eyewear. The infrared signal commands are offset from the corresponding shutter action to minimize interference while still allowing the eyewear to track changes in the timing of the infrared signal received from a display system. Command sequence encodings are provided for enhanced interference rejection. | 12-09-2010 |
20120008182 | QUANTUM COMPUTING METHOD AND QUANTUM COMPUTER - A quantum bit computation method includes operating a two-quantum-bit gate on quantum bits of a first physical system and a second physical system, second energy states of second physical systems except for the first physical system and the second physical system do not change, three energy states being represented by |0>, |1> and |3>, the two energy states being represented by |2> and |4>, energies of |2> and |4> being higher than energies of |0>, |1> and |3>, a transition frequency between |3> and |2> being equal to the resonance frequency, |0> and |1> representing quantum bits, flipping quantum bits of first physical systems after operating the two-quantum-bit gate, executing no operations by a time equal to a time for operating the two-quantum-bit gate, after flipping the quantum bits, and again flipping the quantum bits of the first physical systems after executing no operations. | 01-12-2012 |
20120069414 | OPERATING METHOD FOR STIMULATED RAMAN ADIABATIC PASSAGE AND OPERATING METHOD FOR PHASE GATE - An operating method for stimulated Raman adiabatic passage to change probability amplitude in a three-level system including states of |0>, |1> and |e>, includes the following two steps. One is to direct a first laser beam and a second laser beam which have frequencies in the vicinity of resonance frequencies corresponding to energy differences between |0> and |e> and between |1> and |e>, respectively. The other is to change temporally two-photon detuning to be a difference between first detuning and second detuning. The first detuning is a difference between a first energy difference and a frequency of the first laser beam. The first energy difference is a difference between energy of |0> and energy of |e>. The second detuning is a difference between a second energy difference and a frequency of the second laser beam. The second energy difference is a difference between energy of |1> and energy of |e>. | 03-22-2012 |
20120120468 | FAIR TOKEN ARBITRATION SYSTEMS AND METHODS - Various embodiments of the present invention are directed to arbitration systems and methods. In one embodiment, an arbitration system comprises a loop-shaped arbitration waveguide ( | 05-17-2012 |
20120170091 | QUANTUM COMPUTER AND QUANTUM MEMORY - According to one embodiment, a quantum computer includes a crystal, an optical resonator, and a light source. A host crystal included in the crystal satisfying three conditions a first condition that maximum phonon energy of the host crystal is low, and so that a homogenous broadening of a | 07-05-2012 |
20130182303 | ATOM PHASE-CONTROLLED DOUBLE REPHASING-BASED QUANTUM MEMORY AND DOUBLE-REPHASED PHOTON ECHO METHOD THEREFOR - Disclosed herein are atom phase-controlled double rephasing-based quantum memory and a double-rephased photon echo method therefor. The atom phase-controlled double rephasing-based quantum memory includes an optical medium and an optical pulse generation unit. The optical medium has three energy levels (| | 07-18-2013 |
20130301094 | Method and Apparatus for Quantum Mechanical Entanglement Protection - Embodiments of the present invention provide systems and methods to robustly inter-convert between polarization-entangled photon pairs and time-entangled photon pairs, such that produced polarization-entangled photons pairs can be converted into time-entangled photon pairs, stored as time-entangled photon pairs to preserve the entanglement for longer periods of time, and then converted back to polarization-entangled photon pairs when ready for manipulation, processing, and measurement by a quantum application. | 11-14-2013 |
20140016168 | OPTICAL QUANTUM RANDOM NUMBER GENERATOR - A random number generator includes a light source emitting light at a first frequency, an optical unit including an optical component configured to receive light at the first frequency and emit light at a second frequency, and a measurement unit configured to receive light at the second frequency, and generate a random output value related to a phase parameter of the light at the second frequency. | 01-16-2014 |
20140085693 | METASURFACE NANOANTENNAS FOR LIGHT PROCESSING - A birefringent reflectarray having a planar metasurface containing metallic patches of subwavelength dimension is provided. The reflectarray is capable of simultaneously reflecting, concentrating, and splitting incident infrared light into two orthogonal linearly polarized reflections, and transforms the phase front of an incoming polarized light to a desired phase for the two reflections. Also provided is an optical modulator having a metasurface containing layers of nanoantennas of subwavelength dimension, and capable of modulating the phase and amplitude of light scattered from the modulator. The optical modulator has ability to perform computation through processing of light. | 03-27-2014 |
20140133001 | DEVICE AND METHOD FOR OPTIMALLY DISTINGUISHING AMONG AN ARBITRARY SET OF COHERENT STATES OF LIGHT - A method and device for optimal processing of a plurality of sets of coherent states of lights. The method includes: receiving a light having a coherent state; splitting the coherent state into a plurality of identical states (slices), each a coherent state with lower intensity than that of the received coherent state; transferring the information of each of the identical coherent states into a qubit; compressing the quantum information of the qubit into a quantum memory; and quantum processing the quantum information from the quantum memory. | 05-15-2014 |
20140362425 | Communication System Die Stack - A high density, low power, high performance information system, method and apparatus are described in which perpendicularly oriented processor and memory die stacks ( | 12-11-2014 |
20150009548 | Reservoir Computing Using Passive Optical Systems - A method comprising providing an input signal to at least one input node of a computing reservoir by temporally encoding the input signal by modulating the at least one photonic wave as function of the input signal is described. The method further comprises propagating the at least one photonic wave via passive guided or unguided propagation between discrete nodes of the computing reservoir, in which each discrete node is adapted for passively relaying the at least one photonic wave over the passive interconnections connected thereto. The method also comprises obtaining a plurality of readout signals, in which each readout signal is determined by a non-linear relation to the at least one photonic wave in at least one readout node of the computing reservoir, and combining this plurality of readout signals into an output signal by taking into account a plurality of training parameters. | 01-08-2015 |
20150029568 | SEQUENTIAL ENTANGLER OF PERIODIC PHOTONS IN A SINGLE INPUT AND OUTPUT MODE - An apparatus providing an integrated waveguide device that creates entanglement between a sequence of periodically spaced (in time) photons in a single input and output mode. The invention comprises a polarization maintaining integrated waveguide chip containing a number of delay lines, integrated multimode interferometers with the potential for rapid switching, a polarization controller and off chip computer logic and timing. | 01-29-2015 |
20150029569 | APPARATUS AND METHOD FOR A SYMMETRIC SEQUENTIAL ENTANGLER OF PERIODIC PHOTONS IN A SINGLE INPUT AND OUTPUT MODE - An apparatus providing an integrated waveguide device that creates entanglement between a symmetrical sequence of periodically spaced (in time) photons in a single input and output mode. The invention comprises a polarization maintaining integrated waveguide chip containing a number of delay lines, integrated multimode interferometers with the potential for rapid switching, a polarization controller and off chip computer logic and timing. | 01-29-2015 |
20150077821 | Two Dimensional Photonic Cluster State Generator from Sequential Photons with Multiple Entanglement Gates - We describe an integrated waveguide device that creates entanglement between a sequence of periodically spaced (in time) photons in a single input and output mode. The device consists of a polarization maintaining integrated waveguide chip containing a number of delay lines, integrated multimode interferometers with the potential for rapid switching, a polarization controller and off chip computer logic and timing. The device is capable of creating a diverse array of outputs such as linear cluster states and ring cluster states in a single output mode. | 03-19-2015 |
20150116802 | Phase-Switched Optical Flip-Flops Using Two-Input Bistable Resonators and Methods - A two-input bistable resonator that can be switched in a robust way by phase modulation of the input beams is presented. An optical flip-flop of the present invention may be embodied as a two-input Kerr resonator. The disclosed switching mechanism is compatible with cross-phase modulation induced by set and reset pulses for realization of an ultrafast, passive, all-optical memory element. | 04-30-2015 |
20150331672 | RANDOM NUMBER GENERATOR - A random number generation system, comprising: a light source configured to generate light pulses and a driving unit configured to drive said light source such that the phase of each light pulse has a random relationship to the phase of each subsequently generated light pulse, and such that each light pulse is generated with at least two local maxima in the temporal intensity profile. | 11-19-2015 |
20220137485 | Optical Signal Processing Apparatus - Provided is an optical signal processing apparatus capable of improving computing accuracy without increasing the number of nodes of a reservoir layer. An optical signal processing apparatus for converting an input one-dimensional signal to an optical signal to perform signal processing includes: an input unit configured to perform linear processing on the input one-dimensional signal to convert the input one-dimensional signal to an optical signal of multi-wavelength; a reservoir unit connected to an output of the input unit and configured to perform linear processing and nonlinear processing on the optical signal; and an output unit connected to an output of the reservoir unit and configured to convert the optical signal to an electrical signal and perform linear processing to output a one-dimensional output. | 05-05-2022 |
359108000 | Logic gate | 43 |
20080225362 | ALL-OPTICAL LOGIC GATES USING NONLINEAR ELEMENTS CLAIM - SET V - An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency of the optical input signals to perform a logic operation based on the resonant frequency of the nonlinear element in relation to the carrier frequency. Based on the optical input signals, the nonlinear element generates an optical output signal having a binary logic level. A combining medium can be used to combine the optical input signals for discrimination by the nonlinear element to generate the optical output signal. Various embodiments include all-optical AND, NOT, NAND, NOR, OR, XOR, and XNOR gates and memory latch. | 09-18-2008 |
20080247018 | Reconfigurable and Integrable Optical Logic Gate Based on a Single Soa - An optical logic gate ( | 10-09-2008 |
20080266626 | All-Optical Devices and Methods for Data Processing - An all-optical device for data processing is presented. The device comprises at least one optical waveguide unit ( | 10-30-2008 |
20080310000 | Quantum Coherent Systems and Operations - Nonlinear elements can efficiently implement quantum information processing systems such as controlled phase shifters, non-absorbing detectors including parity detectors, quantum subspace projections, non-absorbing Bell state analyzers, non-absorbing encoders/entanglers, and fundamental quantum gates such as CNOT gates. The non-absorbing detectors permit improvements in the efficiency of a probabilistic quantum gate by permitting reuse of the same photonic resources during multiple passes through the probabilistic gate. | 12-18-2008 |
20090059331 | Optical Circuit for Comparing Two N-Bit Binary Words - An optical comparator circuit comprises a first stage comprising an optical gate which receives the signals applied to the two inputs and produces at its output an N bit signal with each bit being representative of the logical expression A XOR B for a respective pair of bits of the words A and B, a second stage which comprises an optical gate having at least two inputs, a first input being connected to the output of the first stage by an optical connection having a first time delay, and a second input being connected to the output of the first stage through (N−1) further optical connections, each further connection having a different associated time delay which is longer than the first time delay, the second stage providing at its output a signal comprising N bits, each bit corresponding to a respective bit of the signal output from the first stage at that time, and each bit having a first value if all of the inputs to the stage at that time are equal and a second value if and only if the first input differs in value from all of the second inputs, and a third stage which comprises an optical gate having two inputs, the first input being connected to the first input node of the comparator circuit and the second input being connected to the output of the second stage, the output of the third stage comprising an N-bit signal with each bit having a first value if the inputs at that time differ and a second value if the inputs at that time are the same, the presence of the second value in the output being indicative of word A being greater than word B. | 03-05-2009 |
20090116089 | Optical Logic Device - An optical logic device comprising a first mirror confronting a second mirror, a saturable absorber located between the mirrors and radiation which is output from the device is output via the first mirror, and the reflectivity of the first mirror being such that, in use, for incident radiation which has an intensity that is above a given value, the intensity of exiting radiation is below a threshold, and for incident radiation that is below the given value, the intensity of exiting radiation is above the threshold. | 05-07-2009 |
20090190196 | PASSIVE ALL OPTICAL POLARIZATION SWITCH AND LOGIC DEVICES UTILIZING THE SAME - A passive all optical polarization switch and apparatus and methods for implementing logical operations using the switch is provided. The switch converts a first polarized beam having a polarization angle equals to or nearly equals to ±45 degrees into a beam equal to or nearly equal to the vertical component of the first polarized beam. The switch converts a second polarized beam having a polarization angle equals to or nearly equals to ±45 degrees into a beam equal to or nearly equal to the horizontal component of the second polarized beam. The switch combines the vertical component of the first polarized beam and the horizontal component of the second polarized beam to produce an output polarized beam. The switch is used to implement all optical polarization logic gates. | 07-30-2009 |
20090231652 | Devices and methods for optical signal control - A device for use in optical signal control is presented. The device comprises an amplification waveguide, including a pumpable medium, and a reference and a control inputs and an output selectively allowing transmission of light respectively into and out of said amplification waveguide. The reference input, the amplification waveguide and the output define together a transmission scheme for reference light through the pumpable medium. The control input and the amplification waveguide define a depletion scheme for the pumpable medium and control light. The device thus allows for controlling an output signal, formed by the transmission of the reference light, by controllable depletion of the pumpable medium. | 09-17-2009 |
20090273821 | ALL-OPTICAL METHODS AND SYSTEMS - An all-optical modulation format converter for converting optical data signals modulated in an on-off-keying (OOK) format to a phase-shift-keying (PSK) format. The OOK-to-PSK converter can be coupled to a delay-line interferometer to provide an all-optical wavelength converter for differential PSK (DPSK). The OOK-to-PSK converter can also be used in all-optical implementations of various functions, including, for example, exclusive-OR (XOR/NXOR) and OR logic, shift registers, and pseudo-random binary sequence (PRBS) generators. | 11-05-2009 |
20100002276 | PHOTON LOGIC GATES - A system, method, and apparatus for photon logic gates based on quantum switch, where a single or multiple quantum switches are utilized for dark resonance interactions in which three-color lasers interact with a four-level or five-level nonlinear optical medium composed of three ground states and one or two excited states through nondegenerate four-wave mixing processes. The photon logic mechanism is based on combination of single or multiple dark resonance-induced two-photon coherence swapping among the three closely spaced ground states through optical transitions via a common excited state. The two-photon coherence induced on the ground states is optically detected via nondegenerate four-wave mixing processes. The nondegenerate four-wave mixing generation is enhanced owing to dark resonance or electromagnetically induced transparency. The gating time and bandwidth of the present photon logic gate method is not limited by population relaxation time or carrier's lifetime, but phase decay time, where the phase decay time in general much faster than the population decay time in solids or semiconductors. | 01-07-2010 |
20100053712 | INTEGRATED OPTICAL LATCH - Techniques are disclosed for optical switching and data control, without the interaction of electronic switching speeds. In one example embodiment, a common cavity optical latch is provided that that can hold an optical state for an extended period of time, and the operation of which is controlled optically. Optical phase control allows optical modal switching to be employed between two common optical cavities, using incident optical signals and the way in which the cavities manipulate the phase within them to lock in one or the other configuration, thereby forming an optical latch. The optical latch is implemented in an integrated fashion, such as in a CMOS environment. | 03-04-2010 |
20100053713 | OPTICAL SWITCHES AND LOGIC GATES EMPLOYING SAME - An optical switch including a light passageway having a changeable cross-sectional area, an activation light responsive piezoelectric element associated with the light passageway, the activation light responsive piezoelectric element being operative to change its shape in response to activation light impinging thereon and a conductive element operatively associated with the piezoelectric element for enhancing activation light responsiveness thereof, the activation light responsive piezoelectric element being associated with the light passageway and being operative such that changes in the shape of the piezoelectric element cause changes in the changeable cross-sectional area of the light passageway sufficient to govern the passage of light along the light passageway. Logic gates and logic functionality employing an optical switch are also described. | 03-04-2010 |
20100097677 | ALL-OPTICAL RECONFIGURABLE CASCADABLE LOGIC WITH LINEAR PREPROCESSING BY LIGHTWAVE INTERFERENCE AND POST-PROCESSING BY NONLINEAR PHASE ERASURE - The present invention introduces a new architecture for all-optical logic architecture. In this architecture the gate is partitioned into a linear front-end followed by a nonlinear back-end. The logic calculation is practically performed within the linear stage, easing the requirements placed on the non-linear part and thus reducing the gate complexity. The new structures provide flexibility and improved performance for the all-optical logic. The proposed scheme may be integrated optics/electronics. An important additional attribute of our all-optical logic family is reconfigurability, i.e. the ability of the hardware architecture or devices to rapidly alter the functionalities of its components and the interconnection between them as needed. | 04-22-2010 |
20100142017 | Carbon nanotube signal modulator and photonic transmission device - The present invention contemplates a variety of methods and techniques for fabricating a carbon nanotube (CNT) signal modulator for reducing, eliminating, or enhancing the resonance interaction between photonic elements, and a photonic transmission device that may incorporate the signal modulator. The CNT signal modulator comprises a gate CNT on a substrate in a position for receiving an input photonic signal and an input modulation signal; and transmitting an output photonic signal that is reduced, eliminated, or enhanced through the selection of the input modulation signal; and an input modulation signal sender for sending the input modulation signal to the gate CNT and creating the modulated output photonic signal from the gate CNT. The photonic transmission device can contain a plurality of CNTs, each having functional antenna forms that are capable of a resonance interaction of photons between adjacent CNTs when formed as an array on a substrate. The photonic transmission device can also comprise the CNT signal modulator. | 06-10-2010 |
20100157402 | Integrated Optical Latch - Techniques are disclosed for optical switching and data control, without the interaction of electronic switching speeds. In one example embodiment, a common cavity optical latch is provided that that can hold an optical state for an extended period of time, and the operation of which is controlled optically. Optical phase control allows optical modal switching to be employed between two common optical cavities, using incident optical signals and the way in which the cavities manipulate the phase within them to lock in one or the other configuration, thereby forming an optical latch. The optical latch is implemented in an integrated fashion, such as in a CMOS environment. | 06-24-2010 |
20100182665 | ALL-OPTICAL LOGIC GATES USING NONLINEAR ELEMENTS - CLAIM SET V - An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency of the optical input signals to perform a logic operation based on the resonant frequency of the nonlinear element in relation to the carrier frequency. Based on the optical input signals, the nonlinear element generates an optical output signal having a binary logic level. A combining medium can be used to combine the optical input signals for discrimination by the nonlinear element to generate the optical output signal. Various embodiments include all-optical AND, NOT, NAND, NOR, OR, XOR, and XNOR gates and memory latch. | 07-22-2010 |
20100208317 | ALL OPTICAL PROCESSING CIRCUIT FOR CONFLICT RESOLUTION AND SWITCH CONFIGURATION IN A 2X2 OPTICAL NODE - An optical processing circuit, such as a combinatorial network, comprises an arrangement of optical logic gates suitable for use in combination with a switched optical node of the kind having at least first and second input ports and two output ports, the node being configurable into either a cross or a bar configuration, and in which the optical processing circuit is arranged so as to receive at least three optical input signals which respectively comprise a packet identifier signal PIH which identifies whether or not a first input signal is present at the first input port of the switched optical node, the first input port being assigned a higher priority than the second input port, a first destination address AH indicating the output port of the switched optical node to which a first information carrying signal, received at the first input port, is intended to be passed, and a second destination address AL indicating the output port of the switched optical node to which a second information carrying signal, received at the second input port, is intended to be passed, and in which the processing circuit is configured to generate from these three optical input signals the following optical output signals: a contention resolution control (CRC) signal which has a first value if a routing conflict is present and a second if it is not; and a switch control generation (SCG) signal indicating whether the associated switched optical node is to be set in a cross or bar configuration. | 08-19-2010 |
20100232001 | DELAYED OPTICAL LOGIC GATES - A system, method, and apparatus for delayed optical logic gates based on slow light and enhanced nondegenerate four-wave mixing processes, where a single or multiple delayed optical routers are utilized for dark resonance interactions in which two-color lasers interact with a three-level nonlinear optical medium comprised of two ground states and one excited state through the nondegenerate four-wave mixing processes. The delayed optical logic mechanism is based on combination of single or multiple dark resonance-induced two-photon coherence conversion via slow light phenomenon. The two-photon coherence induced on the ground states is optically detected via nondegenerate four-wave mixing processes. The nondegenerate four-wave mixing generation is enhanced owing to dark resonance or electromagnetically induced transparency. The gating time and bandwidth of the present delayed optical logic gates is invariant to the delayed time of the delayed optical router because IN and OUT bandwidth across the nonlinear medium must be same. The present invention of delayed optical logic gates have potential to keep up ultra-high-bandwidth optical information processing using relatively slow electronic processing devices. | 09-16-2010 |
20100284050 | N-NARY OPTICAL SEMICONDUCTOR TRANSISTOR AND AN OPTICAL AND-GATE - An N-nary photonic transistor (PT) based on a heterojunction optical semiconductor microstructure is presented. The PT has one control signal input, one data signal input, and one output. The lights for each input can be one of the wavelengths within the N number (N-nary) of predetermined lightwaves. The output light of the PT is determined by the inputs in accordance with the switching function of the PT. The PT can be used to construct either N-nary digital logic gates or binary Boolean logic gates. For the N-nary system, both the wavelength domain and intensity domain of the lights are used which forms a two dimensional logic system. An optical AND gate, which can be used as either N-nary or binary, is constructed using the current photonic transistor, which is also presented herein. | 11-11-2010 |
20100328744 | OPTICAL LOGIC DEVICE - An all optical logic circuit includes a micro-ring resonator ( | 12-30-2010 |
20110069362 | OPTICAL SIGNAL PROCESSING - Optical signal processor ( | 03-24-2011 |
20110116144 | DELAYED OPTICAL LOGIC GATES - A system, method, and apparatus for delayed optical logic gates based on slow light and enhanced nondegenerate four-wave mixing processes, where a single or multiple delayed optical routers are utilized for dark resonance interactions in which two-color lasers interact with a three-level nonlinear optical medium comprised of two ground states and one excited state through the nondegenerate four-wave mixing processes. The delayed optical logic mechanism is based on combination of single or multiple dark resonance-induced two-photon coherence conversion via slow light phenomenon. The two-photon coherence induced on the ground states is optically detected via nondegenerate four-wave mixing processes. The nondegenerate four-wave mixing generation is enhanced owing to dark resonance or electromagnetically induced transparency. The gating time and bandwidth of the present delayed optical logic gates is invariant to the delayed time of the delayed optical router because IN and OUT bandwidth across the nonlinear medium must be same. The present invention of delayed optical logic gates have potential to keep up ultra-high-bandwidth optical information processing using relatively slow electronic processing devices. | 05-19-2011 |
20110122470 | OPTICAL FLIP-FLOP - An optical flip-flop comprises first ( | 05-26-2011 |
20110242632 | QUANTUM LOGIC COMPONENT AND A METHOD OF CONTROLLING A QUBIT - A component comprising a qubit and a controller for said qubit, said component comprising a quantum dot and an excitation portion configured to produce a neutral exciton state in said quantum dot to form said qubit, the component further comprising a measuring unit to make an optical measurement relating to the orientation of said state, wherein said controller comprises voltage source coupled to electrical contacts configured to apply a modulated electric field across said quantum dot, wherein the modulation is faster than the decay time of said neutral exciton state. | 10-06-2011 |
20120033278 | Optical Logic Gate - Optical logic gate having a second-harmonic generator element that receives a first and a second optical input signal respectively having a first and a second angular frequency and respectively having a first and a second polarization, and which provides a second-harmonic optical signal having a third angular frequency and a third polarization. The third angular frequency is equal to the sum of the first and the second angular frequency. The third polarization is a function of the first and the second polarization. The second-harmonic generator element includes a second-harmonic generator layer in a material having a non-null second-order optical tensor. | 02-09-2012 |
20120038960 | Electro-optical logic techniques and circuits - A method for implementing an electro-optical logic function responsive to first and second logical inputs, includes the following steps: providing, as an output stage, a light-emitting transistor having an electrical input port and an optical output port; and providing, as an input stage, a circuit for receiving the first and second logical inputs and producing a control signal that is coupled with the electrical input port of the output stage. | 02-16-2012 |
20120127550 | OPTICAL LOGIC DEVICES HAVING POLARIZATION-BASED LOGIC LEVEL REPRESENTATION AND METHOD OF DESIGNING THE SAME - Logical operations are implemented using polarization-based logic level representation. An input polarized beam is split into a first beam and a second beam. The first beam is polarized at a first relative polarization angle and the second beam is polarized at a second relative polarization angle. The ratio of the amplitudes of two perpendicular polarization components of the input polarized beam is one or nearly one and the difference between the first relative polarization angle and the second relative polarization angle is 180 degrees or nearly 180 degrees. The relative polarization angle of the input polarized beam equals or nearly equals either the first relative polarization angle or the second relative polarization angle. | 05-24-2012 |
20120236378 | METHOD AND APPARATUS FOR SIMULTANEOUS PROCESSING OF MULTIPLE FUNCTIONS - Electronic logic gates that operate using N logic state levels, where N is greater than 2, and methods of operating such gates. The electronic logic gates operate according to truth tables. At least two input signals each having a logic state that can range over more than two logic states are provided to the logic gates. The logic gates each provide an output signal that can have one of N logic states. Examples of gates described include NAND/NAND gates having two inputs A and B and NAND/NAND gates having three inputs A, B, and C, where A, B and C can take any of four logic states. Systems using such gates are described, and their operation illustrated. Optical logic gates that operate using N logic state levels are also described. | 09-20-2012 |
20120307327 | DELAYED OPTICAL LOGIC GATES FOR BOOLEAN ALGEBRA - A system, method, and apparatus for delayed optical logic gates based on slow light and enhanced nondegenerate four-wave mixing processes, where a single or multiple delayed optical routers are utilized for dark resonance interactions in which two-color lasers interact with a three-level nonlinear optical medium comprised of two ground states and one excited state through the nondegenerate four-wave mixing processes. The delayed optical logic mechanism is based on combination of single or multiple dark resonance-induced two-photon coherence conversion via slow light phenomenon. The two-photon coherence induced on the ground states is optically detected via nondegenerate four-wave mixing processes. The nondegenerate four-wave mixing generation is enhanced owing to dark resonance or electromagnetically induced transparency. The delayed optical logic gates have potential to keep up ultra-high-bandwidth optical information processing using relatively slow electronic processing devices. | 12-06-2012 |
20130016411 | EIT-BASED PHOTONIC LOGIC GATEAANM LIAU; Teh-ChauAACI Hsinchu CountyAACO TWAAGP LIAU; Teh-Chau Hsinchu County TWAANM SHEN; Jian-QiAACI ZhejiangAACO CNAAGP SHEN; Jian-Qi Zhejiang CNAANM WU; Jin-JeiAACI Tainan CityAACO TWAAGP WU; Jin-Jei Tainan City TWAANM YANG; Tzong-JerAACI Hsinchu CityAACO TWAAGP YANG; Tzong-Jer Hsinchu City TW - The present invention provides an EIT-based photonic logic gate, which is constituted by EIT-based stack layers of periodic array of photonic crystal (PCs) layers and EIT (Electromagnetic Induced Transparent) material layers. The input probe signals are incident on the first photonic crystal layer, passing through one or more than one PCs-EIT interfaces and transmitted out from the last EIT material layer. Control filed as the enable signals are incident on each EIT layer to activate the optical logic gate. By varying the detune frequency of probe field and Rabi frequency of control field, its band gap structure can be adjusted. Henceforth, the tunable optical EIT-based photonic logic gate can be achieved as user required. | 01-17-2013 |
20130016412 | POLARITON BASED ALL-OPTICAL SPIN DEVICE - An all-optical spin device is based on spin multistability of trapped microactivity polaritons. | 01-17-2013 |
20130094070 | Optological Gates - In this invention truth logic is defined as that “Light existence=TRUE” and “NO light or Dark=FALSE”. And through the optical principles (: “Fraunhofer” single slit & “Young” double slits light diffraction pattern), I have designed logical function gates (AND, OR, XOR & NOT), using the optical equipments and a coherent light beam (Laser beam), with no interference of any electronic circuits or devices. This design would lead us to make Optological Gates which run at the light speed, so we would have logical function gates with very high speed. | 04-18-2013 |
20130201538 | CHROMOPHORE BASED NANOCIRCUITS - Certain embodiments relate to systems and methods providing wires, circuits, or circuit elements comprised of one or more chromophores. The chromophores can be “tuned” to the critical edge between quantum order and quantum chaos providing long coherence times combined with quantum delocalization resulting in coherent transport of excitons. Such tuned chromophore systems provide coherent transport at room temperature. | 08-08-2013 |
20140098408 | ALL-OPTICAL NAND/NOT/AND/OR LOGIC GATES BASED ON COMBINED BRILLOUIN GAIN AND LOSS IN AN OPTICAL FIBER - A combined Brillouin gain and loss process has been created in a polarization maintaining optical fiber to realize all-Optical NAND/NOT/AND/OR logic gates in the frequency domain. A model describing the interaction of a Stokes, anti-Stokes and continuous wave, and two acoustic waves inside a fiber, ranging in length from 350 m-2300 m, was used to theoretically model the gates. Through the optimization of the gain and loss process, switching contrasts of 20-88% have been achieved, under different configurations. Experimental setups for NAND/NOT/AND/OR optical logic gates have been described. A method and system for designing the all-optical logic gates have been also provided. | 04-10-2014 |
20140126030 | INTEGRATED OPTICS LOGIC GATE FOR POLARIZATION-ENCODED QUANTUM QUBITS AND A METHOD FOR THE PRODUCTION AND USE THEREOF - A quantum logic gate for qubits, suitable for receiving as inputs at least two polarization-encoded qubits, includes at least one partially polarizing beam splitter (PPBS), the beam splitter comprising a first waveguide and a second waveguide which are constructed in integrated optics, the first and second waveguides having a refractive index contrast of between 0.1% and 6% and a birefringence of between 10−6 and 6*10−5. | 05-08-2014 |
20140153071 | OPTICAL SWITCH AND OPTICAL LOGIC DEVICE - Provided are an optical switch and an optical logic device. The optical switch includes a plate having a nanometer-sized thickness, a first slit formed in the plate, through which a first light passes, a second slit formed in the plate, separately from the first slit, through which a second light selectively passes, a plurality of first grooves formed on a first side of the first slit, between the first slit and the second slit, and a plurality of second grooves formed on a second side of the first slit, opposite the first side. The first light and the second light may have a phase difference and a focusing of the first light is turned on/off by controlling the second light. | 06-05-2014 |
20140192390 | Morphable Identity, Networkable Photonic Quantum Logic Gate System & Method - Systems and methods of performing logical operations with photonic quantum logic gates. The logic gates utilize photon states, usually orthogonal linearly polarized states, to selectively enact self-interference operations whose outputs can be altered by inducing phase shifts in one or more portions of the section of the logic gate where the photon states undergo self-interference. The polarization direction switchings are differentially enacted and/or not enacted, in groupings of switches, to perform various logic operations. Additionally, networked logic gates with interrelated self-interference section phase shifts and output states are described that provide additional capabilities. | 07-10-2014 |
20150131134 | OPTICAL LOGIC GATES AND METHOD FOR GENERATING LOGIC SIGNALS USING DNA BASED NANOSTRUCTURE - An optical logic gate includes: a DNA based nanostructure including DNA and metal nanoparticles coupled to the DNA, the DNA based nanostructure being configured to rotate a polarization plane of an incident light; a polarizer to which light passing through the DNA based nanostructure is incident, the polarizer being configured to extract a component in a direction of a predetermined reference axis from light whose polarization plane is rotated by the DNA based nanostructure; and a detection unit to which light passing through the polarizer is incident, the detection unit being configured to generate a logic signal based on a result obtained by comparing the intensity of the component in the reference axis direction extracted by the polarizer with a predetermined threshold value. | 05-14-2015 |
20150338720 | PHOTONIC CMOS INVERTER - Photosensitive logic inverter, in particular of the CMOS type, formed of a transistor of type P and of a transistor of type N of which the respective threshold voltages can be modulated according to the quantity of photons received by a photosensitive zone provided opposite these transistors. | 11-26-2015 |
20150346581 | DELAYED OPTICAL LOGIC GATES FOR BOOLEAN ALGEBRA - A system, method, and apparatus for delayed optical logic gates based on slow light and enhanced nondegenerate four-wave mixing processes, where a single or multiple delayed optical routers are utilized for dark resonance interactions in which two-color lasers interact with a three-level nonlinear optical medium comprised of two ground states and one excited state through the nondegenerate four-wave mixing processes. The delayed optical logic mechanism is based on combination of single or multiple dark resonance-induced two-photon coherence conversion via slow light phenomenon. The two-photon coherence induced on the ground states is optically detected via nondegenerate four-wave mixing processes. The nondegenerate four-wave mixing generation is enhanced owing to dark resonance or electromagnetically induced transparency. The delayed optical logic gates have potential to keep up ultra-high-bandwidth optical information processing using relatively slow electronic processing devices. | 12-03-2015 |
20160161827 | OPTICAL LOGIC CIRCUIT - An optical logic circuit includes a NOT circuit. The NOT circuit reflects by fixed end reflection an data pulse input into the optical logic circuit which is an ON pulse of which a wavelength and an intensity are similar to a wavelength and an intensity of a standard optical pulse or an OFF pulse obtained by applying OFF modulation to the standard optical pulse. The NOT circuit multiplexes the reflected data pulse and the standard optical pulse and outputs the multiplexed pulse. | 06-09-2016 |
20160178987 | Thyristor-Based Optical XOR Circuit | 06-23-2016 |
20160178988 | Thyristor-Based Optical AND Gate and Thyristor-Based Electrical AND Gate | 06-23-2016 |