103 results about "Quantum technology" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention provides a radio-frequency antenna impedance self-adaption matching device and method with the quantum algorithm applied. The radio-frequency antenna impedance self-adaption matching device with the quantum algorithm applied comprises a sensor measuring unit, a control unit and a matching unit, wherein the sensor measuring unit is electrically connected with the control unit, the control unit is electrically connected with the matching unit, the matching unit is electrically connected with the sensor measuring unit, and the matching unit is externally connected with an antenna. The invention further provides a self-adaption matching method of the radio-frequency antenna impedance self-adaption matching device with the quantum algorithm applied. Through the radio-frequency antenna impedance self-adaption matching device and method with the quantum algorithm applied, according to the quantum technology, a radio-frequency antenna impedance matching mathematical model is established. The radio-frequency antenna impedance self-adaption matching device and method with the quantum algorithm applied has the advantages of being high in matching speed, high in precision, good in effect, and applicable to real-time matching.

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.

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.

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.

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.

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.

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.

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.

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.