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104 results about "Quantum technology" patented technology
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Quantum technology is an emerging field of physics and engineering, which is about creating practical applications -- such as quantum computing, quantum sensors, quantum cryptography, quantum simulation, quantum metrology and quantum imaging -- based on properties of quantum mechanics, especially quantum entanglement, quantum superposition and quantum tunnelling.
Wireless local area network security communication method based on quantum key distribution
InactiveCN103338448AImprove securityTamper-proofKey distribution for secure communicationSecurity arrangementQuantum technologyAuthentication server
The invention provides a wireless local area network security communication method based on quantum key distribution. The method comprises the following steps that: (1) identity authentication based on quantum keys is carried out; (2) quantum key negotiation is carried out; and (3) encryption is started. With the method of the invention adopted, information exchange between a faked access point and an applicant, the waste of system resources or a caused denial of service attack can be can avoided; bidirectional authentication between the applicant and an authentication server as well as between the applicant and an authenticator can be realized, and therefore, the security of the identity authentication is greatly improved; keys produced in the identity authentication can be adopted to protect message authentication in key negotiation, and therefore, attacks such as the tamper of a intermediary can be prevented; the security of key negotiation based on quantum technology is guaranteed by physical laws, and therefore, the key negotiation based on quantum technology has undecodability, and can withstand the decoding of a quantum computer with strong computational ability, and therefore, the security of a whole system can be enhanced.
Owner:STATE GRID CORP OF CHINA +2
Photon orbit angular momentum measurement system and method based on wave-front conversion method
ActiveCN106289526AGood repeatabilityHigh operating freedomSpectrum investigationQuantum technologySpatial light modulator
The invention discloses a photon orbit angular momentum measurement system and a method based on a wave-front conversion method, which belong to the technical field of single photon detection in a quantum technology, solve the problem that the existing photon-magnitude orbit angular momentum detection needs multiple interferometers to be cascaded, and can simply, conveniently and accurately measure the photon-magnitude orbit angular momentum. Transmitted laser signals are modulated through multiple times of a spatial light modulator and a Fourier transformation system; the modulated signal pulses with the orbit angular momentum are gathered to a CCD detection array; and the quantum number in the orbit angular momentum in the signals can be distinguished through a pattern position on the detector, different azimuth angles are corresponding to different lateral coordinates, and the quantum number 1 in the orbit angular momentum can be determined as coordinates are measured. The system and the method of the invention are applied to measurement on the quantum number in the single-photon magnitude orbit angular momentum.
Owner:黑龙江省工业技术研究院
Quantum chip, quantum processor and quantum computer
ActiveCN111967603AImprove adaptabilityImprove coherenceQuantum computersNanoinformaticsQuantum technologyBit array
Owner:TENCENT TECH (SHENZHEN) CO LTD
Quantum technology based alternating-current differential measurement system and method
ActiveCN106771556AAccurate electric power valueHigh precisionElectric devicesPower measurement by digital techniqueQuantum technologyDifferential measurement
The invention provides a quantum technology based alternating-current differential measurement system and method and belongs to the field of metering. The system comprises a bias-voltage generation unit, a PJVS, a tested system and conversion unit, a clock source, a first sampling unit, a second sampling unit, an FPGA (field programmable gate array) control unit and a PC upper machine; the clock resource is connected with the bias-voltage generation unit, the tested system and conversion unit and the FPGA control unit respectively and provides time-base frequency for the bias-voltage generation unit, the tested system and conversion unit and the FPGA control unit; the bias-voltage generation unit generates bias current for the PJVS and drives the PJVS to output needed waveforms; the bias-voltage generation unit provides trigger signals for the FPGA control unit; the PJVS is connected with the first sampling unit and the second sampling unit respectively; the tested system and conversion unit is connected with the first and second sampling units respectively; the FPGA control unit is connected with the first and second sampling units and the PC upper machine respectively.
Owner:NAT INST OF METROLOGY CHINA
Quantum error correction decoding method and device based on neural network, and chip
ActiveCN111510157AReduce the number of channelsReduce in quantityQuantum computersError detection/correctionDecoding methodsQuantum circuit
The invention discloses a quantum error correction decoding method and a quantum error correction decoding device based on a neural network, and a chip, which relate to the technical field of artificial intelligence and quanta. The quantum error correction decoding method comprises the following steps of: acquiring error symptom information of a quantum circuit; performing block feature extractionon the error symptom information through using a neural network decoder to obtain feature information; and subjecting the feature information to fusion decoding processing through using the neural network decoder to obtain error result information, wherein the error result information is used for determining error data quantum bits and corresponding error types in the quantum circuit. According to the quantum error correction decoding method and the quantum error correction decoding device, a block feature extraction mode is adopted, the number of channels of the feature information obtainedby each feature extraction is reduced, and the input data of the next feature extraction is reduced, thereby being conductive to reducing the number of feature extraction layers in the neural networkdecoder, further reducing the depth of the neural network decoder, shortening the decoding time of the neural network decoder correspondingly, and satisfying the requirement of real-time error correction.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Mini-type quantum relevancy photon pair source with adjustable wavelength and controllable frequency spectrum and generating method
InactiveCN103901700AAchieve wavelength tuningAchieve Spectrum ControlNon-linear opticsMicro structureQuantum technology
The invention belongs to the technical field of quantum, and provides a quantum relevancy photon pair source with the adjustable wavelength and the controllable frequency spectrum, and the quantum relevancy photon pair source has the advantages of being small, low in cost and high in purity. According to the technical scheme, a pulse laser with the tunable central wavelength and bandwidth in a wave band ranging from 950 nm to 1150 nm serves as a pumping light; a photonic crystal fiber with specific micro-structure parameters or a micro-nanofiber is selected to serve as a nonlinearity medium, and a quantum relevancy photon pair with the adjustable wavelength and the controllable frequency spectrum is generated by tuning the central wavelength and bandwidth of the pumping light through the spontaneous four-wave mixing process of the nonlinearity medium. The method is mainly applied to quantum technology occasions.
Owner:TIANJIN UNIV
Identity authentication system implementation method based on a quantum key distribution technology
InactiveCN109818756AIncrease the difficulty of crackingImprove securityKey distribution for secure communicationUser identity/authority verificationQuantum technologyThe Internet
The invention discloses an identity authentication system implementation method based on a quantum key distribution (QKD) technology. The identity authentication system implementation method comprisesa public key infrastructure system (PKI) and a quantum key distribution (QKD). By introducing a QKD system and adding a true random key brought by the QKD, communication processes between users, between the users and the CA and between the CA and the CA are modified, so that the QKD can be combined with a PKI system; By introducing the quantum technology, the updating frequency and the cracking difficulty of the private key are improved, so that the security of the whole PKI architecture is improved, and by combining quantum key distribution (QKD) and a public key infrastructure system (PKI),the user identity of data communication based on the Internet is confirmed, and the network security is improved. The QKD-driven authentication platform designed by the invention has the potential ofproviding credit service, and the provided credit service gets rid of the influence of subjective factors and forms a brand new credit guarantee system depending on objective physical characteristics.
Owner:BEIJING INFORMATION SCI & TECH UNIV +1
Semi-quantum dialogue method based on single photon and requesting classic communicator to possess measuring capability
ActiveCN107666356AKey distribution for secure communicationPhotonic quantum communicationQuantum technologyOne-time pad
The invention provides a semi-quantum dialogue method based on single photon and requesting a classic communicator to possess measuring capability; the method employs the single photon as a quantum carrier so as to realize mutual exchange of secret messages between a quantum communicator and a classic communicator. The method can use the following technologies to ensure safety when facing externalEve active attacks: the complete robustness of an existing semi-quantum key distribution method, classic one-time pad encryption, classic communicator scrambling operations and decoy photon technology. The classic communicator can make classic base measurement for the information single photons, thus sharing initial states of the single photons with the quantum communicator. The method can solvethe information leaking problems. Compared with a conventional information leak-free quantum dialogue method, the advantages are that the method only requests one communicator to possess the quantum capability. Compared with a conventional semi-quantum dialogue method, the advantages are that the method employs the single photon as the quantum carrier instead of using a two-photon entangled state.The semi-quantum dialogue method can be realized by existing quantum technology.
Owner:嘉兴市顺凯鹿科技有限公司
Fault-tolerant error correction decoding method and device of quantum circuit, and chip
ActiveCN111510158AImplement error-tolerant and error-correcting decodingError Tolerance Error Correction Decoding Real TimeQuantum computersNanoinformaticsDecoding methodsQuantum technology
The invention discloses a fault-tolerant error correction decoding method and a fault-tolerant error correction decoding device of a quantum circuit, and a chip, which relate to the technical field ofartificial intelligence and quanta. The fault-tolerant error correction decoding method comprises the following steps of: acquiring real error symptom information of a quantum circuit, wherein the real error symptom information is obtained by performing noisy error symptom measurement on the quantum circuit by adopting a quantum error correction code; decoding the real error symptom information to obtain a logic error class and perfect error symptom information corresponding to the real error symptom information; and determining error result information of the quantum circuit according to thelogic error class and the perfect error symptom information, wherein the error result information is used for indicating data quantum bits with errors in the quantum circuit and corresponding error types. According to the fault-tolerant error correction decoding method and the fault-tolerant error correction decoding device, fault-tolerant error correction decoding is equivalent to a classification problem, so that an efficient neural network classifier is suitable to be adopted for performing fault-tolerant error correction decoding on the error symptom information, the fault-tolerant errorcorrection decoding speed is increased, and real-time fault-tolerant error correction decoding can be realized.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Quantum system ground state energy estimation method and system
ActiveCN113379057AImprove accuracyEnhance expressive abilityQuantum computersNeural learning methodsQuantum technologyComputational physics
The invention discloses a quantum system ground state energy estimation method and system, and relates to the technical field of quantum. According to the invention, the wave function output by the PQC is post-processed by adopting the neural network, the neural network can play a role of a general function approximator, and compared with a Jastrow factor, the neural network has higher expression ability and ground state energy approximation ability, so that improvement of the accuracy of ground state energy estimation is facilitated. Moreover, the measurement circuit is added after the PQC, the measurement circuit is used for executing the transformation processing corresponding to the Fouli character string on the output quantum state of the PQC, the transformed output quantum state is obtained, and the resource consumption in the measurement estimation process can be reduced through the transformation, so that under the consumption of polynomial resources, measurement and unbiased estimation of the Fouli character string and even the general Hamiltonian are completed.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Liquid metal quantum material and preparation method thereof
ActiveCN107573922AComplex physical and chemical behaviorPrevent oxidationMaterial nanotechnologyNanoopticsQuantum technologyLiquid state
The invention relates to a liquid metal quantum material and a preparation method thereof. The liquid metal quantum material comprises internal quantum dot particles or quantum devices and liquid metals coated outside the quantum dot particles or quantum devices; or the liquid metal quantum material comprises internal liquid metal nano liquid drops and liquid metal compound layers coated outside the liquid metal nano liquid drops. The invention also discloses the method for preparing the liquid metal quantum material. The liquid metal quantum material provided by the invention has the unique properties of liquid state, flexibility and deformability; and the preparation difficulty of the material is greatly reduced, so that the electronic interconnection difficulty of traditional quantum materials or devices is greatly lowered, thereby being more beneficial to application of quantum technology.
Owner:BEIJING DREAM INK TECH CO LTD
Quantum noise process analysis method and device, equipment and storage medium
ActiveCN110210073AEasy to analyzeAccurate analysisQuantum computersMathematical modelsQuantum technologyQuantum noise
The invention discloses a quantum noise process analysis method and device, equipment and a storage medium, and belongs to the technical field of quantum. The quantum noise process analysis method comprises the following steps: carrying out quantum process chromatography on a quantum noise process of a target quantum system to obtain dynamic mapping of the quantum noise process; extracting tensortransfer mapping of the quantum noise process from the dynamic mapping; and analyzing the quantum noise process according to the tensor transfer mapping, wherein the tensor transfer mapping is used for representing the dynamic evolution of the quantum noise process, namely, the evolution law of the dynamic mapping of the quantum noise process along with time is embodied. Therefore, the quantum noise process is analyzed based on tensor transfer mapping of the quantum noise process, and compared with pure quantum process chromatography, richer and more comprehensive information about the quantumnoise process can be obtained, so that the quantum noise process is analyzed more accurately and comprehensively.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Measurement-retransmission semi-quantum private comparison method without entanglement
ActiveCN108599942AKey distribution for secure communicationPhotonic quantum communicationThird partyQuantum technology
The invention provides a measurement-retransmission semi-quantum private comparison method without entanglement, which uses the product state of two particles as an initial quantum preparation resource. Two classical users can achieve their secret equality comparison with the help of a quantum third party, and the quantum third party is semi-loyal, which means that the quantum third party is allowed to act wrongly according to the own will but cannot collude with the users. According to the scheme of the invention, the output correctness and the security performance against external attacks and participant attacks can be guaranteed. Compared with the previous semi-quantum private comparison method, the method of the invention has the advantages that only the product state of two particlesis used as the initial quantum preparation resource, only the third party is required to perform single photon measurement, and quantum entanglement swapping is not required. The method of the invention can be realized by an existing quantum technology.
Owner:嘉兴市顺凯鹿科技有限公司
Two-party quantum private comparison method based on five-quantum bit entangled state
ActiveCN105871544AAvoid consumptionEnsure safetyKey distribution for secure communicationUser identity/authority verificationThird partyQuantum technology
The invention discloses a two-party quantum private comparison method based on a five-quantum bit entangled state. The two-party quantum private comparison method is used for comparing whether secrets of two users are equal or not in size. The two-party quantum private comparison method has the advantages that the method needs help of a semi-loyal third party (Third Party, TP), the TP is allowed to mistakenly act according to the wish of the TP, but is not allowed to conspire with any one of the two users; one five-quantum bit entangled state can be used for achieving two-bit equality comparison in all comparison; unitary operation and the quantum entanglement swapping technology are not required in the method, it is avoided that expensive quantum devices related by unitary operation and the quantum entanglement swapping technology are consumed; Bell measurement and single-particle measurement are only adopted in the method, and the quantum measurement can be achieved with the existing quantum technology; safety performance according to outside attack and participant attack is guaranteed; secret information and the comparative result of the two users are not revealed to the TP.
Owner:浙江康奥思信息技术有限公司
Electric communication system and method based on quantum secure communication
ActiveCN108880800AFlexible communication configurationImproving the efficiency of quantum communicationKey distribution for secure communicationPhotonic quantum communicationSecure communicationElectricity
The invention discloses an electric communication system and an electric communication method based on quantum secure communication, wherein the first quantum key generation device and the second quantum key generation device of the electric communication system cooperate to generate quantum keys; the quantum key management device stores and manages the quantum keys; the first quantum key generation device distributes the quantum keys to the terminal encryption module of the electric communication system in an online manner, the quantum key mobile storage device distributes the quantum keys tothe terminal encryption module in an offline manner, and the terminal encryption module encrypts and decrypts the data of the electric service of the electric terminal by the quantum keys; and the encryption module of the main station encrypts and decrypts the data of the electric service that is authenticated by the quantum keys. The electric communication system and method based on quantum secure communication, and the quantum technology modification method may perform online distribution and offline distribution of quantum keys in an electric communication system.
Owner:BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +3
Quantum identity authentication method and application method of quantum identity authentication method in quantum key distribution process
ActiveCN107493168AThe principle of the method is clearSimple methodKey distribution for secure communicationQuantum entanglementQuantum technology
The invention discloses a quantum identity authentication method and an application method of the quantum identity authentication method in a quantum key distribution process. Mutual identity authentication between two participants can be realized. The security is based on a quantum mechanics basic principle and is independent of the computation capability of an attacker. When the method is realized, technologies such as quantum storage, quantum entanglement and multiparticle measurement do not need to be used, so the scheme is has the characteristics of simpleness and easiness in realization. Compared with the prior art, the method has the positive effects that the method provided by the invention is clear in principle, a realization method is simple, the security is high, and an entanglement source and multiparticle measurement and quantum storage technologies do not need to be used, so the realization can be achieved under an existing technological condition. Related authentication schemes can be applied to establishment of a high-security quantum identity authentication system with the quantum computation resistance capability and also can be applied to a current mainstream quantum key distribution system, thereby realizing the high-security identity authentication between two communication parties.
Owner:NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
Semi-quantum technology based two-party key negotiation method and system
ActiveCN108173654AAbsolutely safeMeet fairnessKey distribution for secure communicationThird partySecure communication
The invention belongs to the field of quantum technology based secure communication, and discloses a semi-quantum technology based two-party key negotiation method and system. Three users participatein execution of this protocol, wherein the users include two users who negotiate keys and a semi-trusted third party; the two users only need to have two basic quantum functions, specifically: measurement: using a classical base {|0), |1)} to measure a quantum, generating a new quantum |0) or |1), and sending the new quantum out; reflection: directly sending the quantum to a sender without any modification after the quantum is received. The third party has advanced quantum functions, can prepare quantum states, can use various bases to measure quantum states, and have a quantum storage function. The invention discloses a semi-quantum technology based two-party key negotiation system at the same time. The protocol proposed by the invention is a quantum technology based two-party key agreement protocol, and the fairness of the protocol is also satisfied under the premise of ensuring the absolute security of the key.
Owner:CHENGDU UNIV OF INFORMATION TECH
Inverse-distance spoofing safety ranging system based on quantum technology, and ranging method thereof
InactiveCN108919296ARealize anti-distance deception jammingFor the purpose of deceivingKey distribution for secure communicationPhotonic quantum communicationQuantum technologyQuantum electrodynamics
The invention relates to an inverse-distance deception safety ranging system based on a quantum technology, and a ranging method thereof. The inverse-distance deception safety ranging system based onthe quantum technology is composed of a quantum state preparation system, a transmitting and receiving system, a quantum state detection system and a computer integrated analysis system. The quantum state preparation system prepares a quantum state and encodes the quantum state; the transmitting and receiving system transmits and receives encoded quantum state signals; the quantum state detectionsystem identifies an echo signal quantum state, and the integrated analysis system conducts integrated analysis on an identified echo signal. The quantum state preparation system prepares a quantum polarization state and encodes the quantum polarization state, when the enemy receives and replicates the signal, the quantum state of the signal is interfered, and thus the signal error rate is increased; and deception interference behaviors of the enemy can be identified by analyzing the error rate of the echo signal, and finally the misjudgment probability of enemy targets is decreased. Accordingto the inverse-distance deception safety ranging system based on the quantum technology, and the ranging method thereof, the purpose of absolute safety and high-precision ranging are achieved.
Owner:NORTHEAST GASOLINEEUM UNIV
Radio-frequency antenna impedance self-adaption matching device and method with quantum algorithm applied
InactiveCN103326685AGood effectFast matchingMultiple-port networksAntenna impedanceQuantum technology
Owner:HUNAN UNIV
Quantum circuit determination method and device
ActiveCN112651509AHighly abstractImprove unityQuantum computersMathematical modelsQuantum circuitQuantum technology
The invention discloses a quantum circuit determination method and device, and belongs to the technical field of quanta. The method comprises the following steps: according to an initial sampling mode, sampling K groups of line units from an initial line unit pool, and constructing and generating K candidate quantum lines; determining performance evaluation indexes corresponding to the K candidate quantum circuits; updating the sampling mode and the line units in the line unit pool based on the performance evaluation indexes; sampling K groups of circuit units from the updated circuit unit pool according to the updated sampling mode, and constructing and generating K candidate quantum circuits; and determining a target quantum circuit from the K candidate quantum circuits generated at the last time under the condition that the cycle suspension condition is met. According to the scheme, the method has extremely high universality and universality, the quantum circuit used for completing the target task can be efficiently constructed, and the calculation consumption is low.
Owner:TENCENT TECH (SHENZHEN) CO LTD
A semi-quantum privacy comparison method and system based on a Bell state
ActiveCN109714158AImprove qubit efficiencyReduce hardware costsKey distribution for secure communicationPhotonic quantum communicationThird partyBell state
The invention belongs to the technical field of data information, and discloses a semi-quantum privacy comparison method and system based on a Bell state, and the method comprises the steps: achievingthe comparison of privacy information between semi-quantum users through the attributes of a Bell state; On the basis of ensuring completion of privacy comparison, the quantum bit efficiency is improved, and the protocol process is simplified; And it is ensured that the third-party TP and the external eavesdropper cannot obtain part or even all of privacy information of the user while it is ensured that privacy comparison is completed. According to the invention, the protocol can be applied to the current actual network environment, and the practical process of the quantum technology is promoted; Privacy comparison and eavesdropping detection can be completed by the semi-trusted TP through simple Bell measurement, and additional privacy information cannot be acquired by the semi-trusted TP; And at last, the TP only needs to publish one classical particle to represent whether the privacy information of the two parties is equal or not.
Owner:CHENGDU UNIV OF INFORMATION TECH
Remote source tracing method and system of digital electric energy meter based on quantum technology
InactiveCN109725281AAvoid social costsRealize remote traceabilityElectrical measurementsQuantum technologyAlternating current
The invention discloses a remote source tracing method and system of a digital electric energy standard meter based on a quantum technology. The method comprises the steps of: obtaining standard electric energy data generated after a pre-set power source is subjected to source tracing through alternating-current quantum voltage; sending the obtained standard electric energy data to a metering client side comprising a measured digital electric energy meter through a communication network; obtaining output electric energy detection result data when the measured digital electric energy meter in the metering client side responds to the standard electric energy data; and, performing electric quantity comparison based on the standard electric energy data and the electric energy detection resultdata, and calculating the electric quantity error between the two, namely the metering error of the measured digital electric energy meter. According to the remote tracing method and system of the digital electric energy meter based on the quantum technology in the invention, an electric energy signal subjected to source tracing through the quantum voltage is used as a standard electric energy signal; remote source tracing of the digital electric energy meter is realized; source tracing is efficient and reliable; and remote inspection can be avoided.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +4
Portable quantum hydrogen-rich water generator
The invention belongs to the field of electrolysis cups, and discloses a portable quantum hydrogen-rich water generator. A cup support is arranged, a big upper cover is arranged on the upper portion of the cup support in a rotational mode, and a small upper cover is arranged on the big upper cover; a base is fixedly connected with the lower portion of the cup support, and a button and a working indicating light are arranged on the side wall of the base; a waste water tank is arranged on the base in a rotational mode; a reaction water tank is arranged in the base; an electrode reaction module, a power supply assembly and a circuit board are arranged in the reaction water tank; the reaction water tank is vertically divided into two cavities not communicated with each other by the electrode reaction module; a fixing plate is arranged at the center of the interior of the electrode reaction module. By means of the generator, water molecules are subjected to micro-electrolysis through a hydrogen generation module arranged in the bottom of a cup body, and then hydrogen-rich water is obtained, so that the quantum hydrogen-rich water generator has an efficacy of health maintenance; moreover, a quantum technology is applied in the cup body, so that the final hydrogen-rich water generated by means of electrolysis is absorbed more easily and healthier.
Owner:SHANDONG YONGCHUNTANG GRP
Method for preparing energy body with function of quantum technology implantation
InactiveCN108159569ASimple production processLow costLight therapyWatch chainsQuantum technologyFar infrared
The invention discloses a method for preparing an energy body with function of quantum technology implantation. The method comprises: step one, carrying out classification; to be specific, classifyingenergy bodies based on specifications and sizes and classifying the energy bodies with the same sizes into one class; step two, carrying out quantum implantation; to be specific, pushing the energy bodies in the step one into a quantum bin, modulating the frequency based on product material components and proportions, irradiating the energy bodies by using the high-frequency vibration biologicallight kinetic energy, enabling molecule arrangement sequences in the energy bodies to be changed, and emitting far infrared waves of 4 to 140 microns by the energy bodies to realize quantification processing; step three, carrying out sorted packaging; to be specific, weighing and sorting the energy bodies obtained at the step two, placing the energy bodies into packing bags for packaging; and stepfour, carrying out beading; to be specific, connecting the energy bodies obtained at the step three in series based on the same classes by using ropes, lines or chains. Therefore, quantum technologyimplantation can be carried out on various materials, so that the health care function is realized and thus the human microcirculation is improved.
Owner:魏健
Light quantum technology-based high-sensitivity fiber grating sensing method and system
InactiveCN110823262AHigh precision demodulationEfficient receptionConverting sensor output opticallyQuantum technologyGrating
The invention discloses a light quantum technology-based high-sensitivity fiber grating sensing method and system. A single photon detector is used for substituting a traditional photoelectric conversion device, a time digital converter is used for performing coincidence counting reflection photons, the drift size of a central wavelength of the fiber grating sensor can be further calculated according to a counting value of the reflection photons, the physical information change size of a measurement region is further demodulated, the output moment of an electrical signal is recovered on time by the time digital converter and the signal processing system to obtain a space position of the fiber grating, so that space position information of which physical information is changed is acquired,and distributed sensing positioning is achieved. By the method, accurate acquisition of the sensor position information and high-accuracy demodulation of the corresponding sensing information are achieved.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Quantum Gibbs state generation method and device and electronic equipment
ActiveCN111598246AGenerate efficientlyGenerate accuratelyQuantum computersMachine learningQuantum technologyQuantum electrodynamics
The invention provides a quantum Gibbs state generation method and device and electronic equipment, and belongs to the technical field of quanta. The method comprises the following steps: acquiring atarget Hamiltonian amount; determining a target loss function according to the polynomial expansion of the free energy function corresponding to the target Hamiltonian quantity; determining a target vector corresponding to a parameter vector in a preset parameterized quantum circuit according to the value of the target loss function; substituting the target vector into a preset parameterized quantum circuit to determine a target quantum circuit; acting the target quantum circuit on the initial states of the first type of system and the second type of system, obtaining the target quantum stateof the target quantum circuit on the first type of system, wherein the dimension of the first type of system is the same as the dimension of the target Hamiltonian quantity; and determining a Gibbs state corresponding to the target Hamiltonian quantity according to the target quantum state. Therefore, by means of the quantum Gibbs state generation method, the quantum Gibbs state is efficiently andaccurately generated.
Owner:BEIJING BAIDU NETCOM SCI & TECH CO LTD
Method and system for dlt networks consensus enhancement using quantum computing mechanisms
ActiveUS20210126800A1Easy to integrateMinimize the numberQuantum computersUser identity/authority verificationQuantum technologyQuantum entanglement
Method and system which provides an increase in the basic security, performance, and trust of consensus algorithms in distributed systems based on the use of quantum technology (quantum computing mechanisms). In order to do that, it is built a quantum trust network layer using quantum entanglement between nodes to avoid the current problems in consensus algorithms.
Owner:TELEFONICA IOT & BIG DATA TECH SA
Method for implementing quantum coded lock
InactiveCN108183797AImprove securityMeet safety factor requirementsKey distribution for secure communicationIndividual entry/exit registersQuantum technologyQuantum
The invention discloses a method for implementing a quantum coded lock. The method comprises the following steps: performing a pairing connection with a mobile terminal; generating a quantum key; synchronizing the quantum key with the mobile terminal; obtaining and matching the quantum key information; and performing unlocking. The mobile terminal unlocks the quantum coded lock through the uniqueand absolutely random quantum key, the quantum technology is applied to the lockset to further improve the security of the lockset, and some occasions with extremely high requirements on safety factors are met to a certain extent.
Owner:浙江科易理想量子信息技术有限公司
A detection method for African swine fever based on quantum dot technology
InactiveCN102279265ASave dehydrationOmit operabilityMaterial analysis by observing effect on chemical indicatorQuantum technologyAfrican swine fever
An immunohistochemical analysis and detection method based on quantum dots in the field of nanomaterials, comprising the following steps: (1) first dispersing the quantum dots in a borate buffer solution, then adding diimide sulfide and a secondary antibody, mixing , react, centrifuge, and wash to obtain the African swine fever monoclonal antibody complex labeled with quantum dots; wherein, quantum dots: diimine sulfide: the molar ratio of the secondary antibody is 60: 15: 1; or (2) first the quantum dots Disperse in a phosphate buffer solution containing 1.25% glutaraldehyde by volume, disperse, react, add a secondary antibody, react, centrifuge, and wash to obtain a quantum dot-labeled African swine fever monoclonal antibody complex; wherein, the quantum dot The molar ratio of :glutaraldehyde:secondary antibody was 60:15:1; after that, immunoreaction and observation were carried out according to the standard immunohistochemical detection method. The method of the invention directly observes with a fluorescent microscope, is simple and easy to implement, increases the stability of the fluorescent light, and improves the accuracy of analysis and the sensitivity of detection.
Owner:陈文刚
Device and method for adjusting relative phase of alternating current voltage and alternating current quantum voltage
InactiveCN109870605ARealize automatic adjustmentWith phase adjustment functionCurrent/voltage measurementQuantum technologyDifferential measurement
The invention provides a device and method for adjusting the relative phase of an alternating current voltage and an alternating current quantum voltage. The device comprises a time reference system,an alternating current voltage source, an alternating current quantum voltage generating system and a differential measurement system, wherein the time reference system provides a clock; the alternating current voltage source outputs a periodic signal; the alternating current quantum voltage generating system generates a step wave signal as a standard reference signal of the periodic signal; the differential measurement system is configured to collect the periodic signal, calculate a delay, send a generation trigger signal to the alternating current quantum voltage generating system, and calculate a differential signal between the periodic signal and the step wave signal. According to the scheme of the invention, a software delay and hardware trigger combination mode is adopted, the automatic adjustment of the relative phase of a sinusoidal signal and the step wave signal can be realized, the phase adjustment accuracy and the measurement efficiency can be improved, the problem that part of the alternating current voltage sources cannot perform phase adjustment can also be solved, and thus the alternating current voltage measurement based on a quantum technology has better universality.
Owner:NAT INST OF METROLOGY CHINA
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