279 results about "Quantum information" patented technology

The invention relates to the technical field of information security, in particular to an anti-quantum computing public key cryptography method and system. The method comprises the following steps: acquiring a large prime number p and constructing a multivariable polynomial ring; randomly generating a group of polynomial coefficients, generating a polynomial embedding rule public key, and generating a multivariable polynomial ring embedding public key; the method comprises the following steps: acquiring a quantum computer message, performing polynomial space mapping conversion and message public key encryption, and meanwhile, generating a quantum message public key encrypted ciphertext by introducing a polynomial perturbation term and a transcendental coding term; the quantum message public key encryption ciphertext and the corresponding polynomial ring embedded public key are transmitted to a quantum message decryption party for inversion decryption processing, and a quantum computer message decryption plaintext is generated; and performing anti-quantum computing security analysis on the encryption and decryption processes, and regenerating a multivariable polynomial ring dynamic public key. According to the method, the attack of quantum computing can be effectively resisted, so that the security of quantum information transmission is guaranteed.

The invention discloses a method and system for assimilating meteorological satellite hyperspectral error non-Gaussian distribution data based on quantum computing, and the method carries out the generalized quality control of meteorological satellite hyperspectral data in consideration of an outlier value on the observation brightness temperature and equivalent data of a satellite hyperspectral infrared detector channel. Comprising the steps of channel optimal selection considering quantum information entropy, deviation correction based on artificial intelligence generalized integration generation type deep learning and cloud detection based on a minimum residual method to remove cloud view field point data, so that quality control data is obtained. And performing quantum space solution on the quantum non-Gaussian increment four-dimensional variational assimilation model compatible with error Gaussian distribution and non-Gaussian distribution based on quality control data to obtain analysis field data, and solving the problem that the brightness temperature assimilation of the hyperspectral infrared channel with error non-Gaussian distribution (or obvious non-Gaussian characteristics) is limited in the prior art. Meanwhile, the method is high in solving speed, and the obtained analysis field data has good precision and calculation timeliness.

The invention discloses an ion control method and device, an ion trap system and a related device, and belongs to the technical field of quantum information. A plurality of ions in the ion trap system are in a magnetic field with a magnetic field gradient, the magnetic field gradient enables transition frequencies of the plurality of ions to be different, and each ion is of a multi-energy-level structure. The method comprises the steps that according to the transition frequency of a plurality of first ions, the energy level of the first ions is adjusted so that the first ions irrelevant to quantum control can be transferred from a calculation space to an auxiliary space, and the energy level of the ions in the calculation space is different from the energy level of the ions in the auxiliary space; and performing quantum manipulation on the plurality of second ions in the calculation space to form a plurality of quantum bits. According to the scheme, light finding of ions is not needed, light finding of ions is not needed, multi-ion control can be achieved through global laser or microwaves, and implementation is easy. And moreover, multi-ion control can be realized by using a relatively small magnetic field gradient, and the ion control threshold is reduced.

The invention discloses an optimizer design method and device using a quantum tunneling effect and a medium, and relates to the technical field of computer science and technology and quantum information. The method comprises the following steps: converting an optimization problem into a quantum state through mathematical modeling; iterative optimization of the quantum state is realized through a parameterized quantum circuit, and a quantum tunneling effect mechanism is introduced, so that a local optimal solution is jumped out; after each quantum state evolution, evaluating the quality of a current solution by observing a target function value; a self-adaptive multi-layer optimization strategy is introduced, and the learning rate of parameters is adjusted to gradually converge to a global optimal quantity, so that the capabilities of global search and local optimization are balanced; after the quantum circuit is optimized, an observation value is measured and extracted, and a globally optimal solution is determined according to the observation value. The quantum circuit and the tunneling mechanism are introduced into hardware design, the fast jumping function is achieved through the tunneling phenomenon, the optimization performance can be improved, and a more efficient solution is provided for hardware acceleration.

The invention discloses a quantum key distribution method, device and system, and belongs to the technical field of networks. The first quantum device generates a modulated optical signal carrying quantum information and classic information. The classic information and the quantum information are simultaneously modulated on at least one polarization of the modulated optical signal. The modulated optical signal includes a plurality of subcarriers at different frequency bands. The classic information and the quantum information are located within different ones of the plurality of subcarriers. The classical information comprises quantum key negotiation information. The first quantum device sends the modulated optical signal to the second quantum device over the optical fiber link. Quantum information and classical information are modulated on the same polarization of an optical signal, and the system capacity is high. The quantum information and the classical information are respectively modulated on subcarriers in different frequency bands in the optical signal, so that respective modulation precision requirements of the classical signal and the quantum signal can be met. And quantum information and classical information are transmitted simultaneously by multiplexing a set of devices, so that the hardware cost is saved.

The invention provides an improved randomness evaluation method and system for a continuous variable source independent quantum random number generator based on heterodyne detection, and relates to the technical field of quantum information communication. According to the method, the influence of non-perfect ideal characteristics of an actual device at a measuring end is considered, and the safety problems of non-equilibrium heterodyne detection and the like caused by non-ideal characteristics of local oscillation light intensity fluctuation, the beam splitting ratio of a beam splitter and the detection efficiency of a detector are solved; the above imperfect characteristics are associated with the estimation of the measurement accuracy of the orthogonal component in the calibration process, and the measurement accuracy estimation formula of the orthogonal component is corrected, so that the randomness evaluation is corrected, the problem of security vulnerabilities introduced by local oscillation light intensity fluctuation under unbalanced heterodyne detection can be solved, and the accuracy of the measurement accuracy of the orthogonal component is improved. And the actual safety of the system is further improved.

The invention discloses a fusion quantum secure communication method of an NAT gateway, and relates to the technical field of communication network information security and quantum information. Comprising the steps of 1, creating a fusion quantum security communication system of an NAT gateway, 2, adopting a quantum hybrid encryption architecture through a quantum security module, and internally arranging a quantum key distribution unit and an anti-quantum computing acceleration chipset, 3, expanding a quintuple mapping structure of NAT through a dynamic address mapping and quantum encryption module, newly adding a quantum security dimension field QSV, and carrying out quantum encryption on the quantum key distribution unit and the anti-quantum computing acceleration chipset. And 4, developing a protocol non-inductive conversion engine through a hybrid protocol stack cooperation module, supporting an IPv4 / IPv6 dual-stack quantum tunnel and a quantum key inheritance protocol to realize cross-protocol family encryption parameter migration, dynamically adjusting a quantum encapsulation mode in an address conversion process, and dynamically associating an internal network address port with a quantum key parameter and a channel fingerprint feature. And 5, constructing a quantum perception type session state machine through an anti-quantum attack session management module, and performing a joint decision-making mechanism through quantum entanglement state monitoring and classical traffic feature analysis.

The invention relates to the technical field of quantum information devices, and particularly discloses a fullerene Y3N-C80-based probability bit device and a preparation method thereof.The probability bit device comprises fullerene Y3N-C80 molecules, graphene point electrodes, a metal electrode and a substrate, the fullerene Y3N-C80 molecules are connected to the two graphene point electrodes, the graphene point electrodes are connected to the metal electrode, and the metal electrode is connected to the substrate. The graphene point electrode and the metal electrode are located on the substrate, and the fullerene Y3NatC80 molecules are connected with the graphene point electrode through amide covalent bonds. According to the invention, the electric dipole moment is driven to overturn under the condition that different transverse source-drain bias voltages are applied to the probability bit device, so that the probability bit device can present different conductive states, the time proportion of the conductive states can be adjusted according to the magnitude of the applied transverse source-drain bias voltages, and the purpose of regulating and controlling the single-molecule probability bit device is achieved.

The invention belongs to the technical field of quantum information, and particularly relates to a quantum entanglement and classical signal common-fiber transmission device based on a hollow-core optical fiber. According to the device, the characteristics of low loss and weak non-linear effect of the hollow-core optical fiber are utilized, the quantum entanglement two-photon pair and the classical optical signal are transmitted in the hollow-core optical fiber in a co-fiber mode through the wavelength division multiplexing technology and the polarization optimization strategy, the system can tolerate the classical signal with the higher communication rate, and the lower quantum signal bit error rate is allowed. The quantum entanglement and classical signal common-fiber transmission device designed through the method can be widely applied to the fields of quantum key distribution, quantum teleportation, quantum clock synchronization, distributed quantum calculation and the like compatible with a classical optical fiber communication system.

The invention discloses a quantum random number secure generation method and device based on quantum entanglement and a medium, and relates to the technical field of quantum information. According to the method, quantum entanglement and quantum teleportation protocols are combined, and the VN algorithm is introduced to improve the security of the quantum random number generation process. According to the method, the randomness, the security and the quantum attack resistance of the random number generator can be improved by utilizing the unpredictability of the quantum state and the non-locality of quantum entanglement, so that higher information security requirements are met.

The invention belongs to the technical field of quantum information science, and particularly relates to a multi-soliton time domain distribution representation device and method. According to the multi-soliton time domain distribution characterization method, the time delay of one arm of the HOM interferometer is changed through the adjustable light delay line to carry out coincidence measurement of HOM interference, and characterization of multi-soliton time domain features is achieved. All devices used in the stability test method are mature commercial devices, can be used in the fields of quantum communication, quantum calculation, quantum precision measurement and the like, and are beneficial to practical and commercialized development of light quantum information science and technology.

The invention relates to the technical field of asset management, and discloses a meta universe asset management method based on digital twinning, which comprises the following steps: step 1, modeling virtual assets by constructing a digital twinning system, establishing digital twinning bodies corresponding to the virtual assets in a real world and a meta universe environment, the digital twin comprises basic attributes, historical transaction records and market behavior data of assets, an initial value state of the assets is set in the system, and a transaction rule, an asset circulation mechanism and external economic influence factors in a market environment are modeled. Virtual assets are modeled by combining a digital twin technology and a quantum information theory, market behaviors of the assets are described by using a quantum state, market value changes of the assets are calculated in real time, assets are evaluated in a dynamic market, and a reliable and accurate virtual asset value prediction effect in a complex market environment is obtained.

A quantum method, receives by a quantum circuit, quantum information from a first block within a blockchain. The quantum method performs quantum voting in each node in the quantum blockchains. The quantum method uses entanglement capabilities for achieving consensus voting.

The invention belongs to the technical field of post quantum information security, and particularly discloses a fusion post quantum cryptography system and a fusion encryption method and a fusion decryption method thereof, the fusion encryption method is applied to a sending end, and the fusion encryption method comprises the following steps: encrypting original plaintext data by using a public key of a Streamline NTRU Prime algorithm to generate corresponding ciphertext data; signing the ciphertext data by using a private key of a Diithium algorithm to obtain a ciphertext signature; and sending the ciphertext data and the ciphertext signature to a receiving end. The fusion decryption method is applied to a receiving end, and comprises the following steps: receiving ciphertext data and a ciphertext signature; verifying the ciphertext signature by using a public key of a Diithium algorithm; and under the condition that the ciphertext signature is verified to be valid, decrypting the ciphertext data by using a private key of a Streamline NTRU Prime algorithm to generate original plaintext data.

A quantum information system comprises a quantum information element 10 and a control line. The quantum information element comprises a first Josephson element J1 and a second Josephson element J2, wi

The invention belongs to the technical field of quantum information, and provides a quantum entanglement source demonstration method and system, and the method comprises the steps: receiving quantum entanglement photon pairs, and obtaining coincidence counting data based on the quantum entanglement photon pairs; performing relevant parameter calculation based on the coincidence counting data, and generating a three-dimensional animation playing instruction; or receiving the placing position of the optical element, and generating a three-dimensional animation playing instruction when the placing position of the optical element is consistent with the light path generated by the entanglement source; and after a three-dimensional animation playing instruction is generated, obtaining pictures at different angles in the entanglement source generation process, and respectively displaying the pictures. Linkage with suspension imaging is realized, and learners can directly participate in the design of quantum entanglement.

Systems and methods are described for quantum information retrieval. An example system may include a quantum cloning unit, a photon number splitting (PNS) unit, and a variable-strength measurement unit to enhance the accuracy and reliability of quantum state estimations without introducing substantial decoherence. The quantum cloning unit may be used to generate approximate clones of a qubit. If the information is encoded in a multi-photon state resulting in a multi-photon state qubit, then the photon number splitting (PNS) unit may be used to intercept the multi-photon state and reflect a single photon from the multi-photon state, which may then be subjected to quantum cloning. These qubits and qubit clones may then be subjected to variable-strength measurements, which provides detailed analysis with minor disturbance to quantum properties such as superposition and entanglement.

The present disclosure relates to a system and a method of performing Gaussian boson sampling via time multiplexing correlation of squeezed vacuum states for quantum information experiments. One embodiment relates to a method for performing Gaussian boson sampling comprising the steps of—generating a set of pulsed pairs of squeezed vacuum states,—performing time 2024 / 038212 multiplexed correlation of multiple of such pairs of squeezed vacuum states,—measuring, via a homodyne detection, a state from the pairs of generated squeezed vacuum states,—feed-forwarding the homodyne result of the measured states to a displacement unit,—performing displacement operations on the remaining state from the pairs of generated squeezed vacuum states, and—counting the states output from the displacement unit.

The invention provides an integrated polarization encoder, and relates to the technical field of quantum information, and the integrated polarization encoder comprises an optical integrated chip and a micro-optical device. The optical integrated chip comprises an optical switch, four on-chip waveguides and two two-dimensional gratings; each two-dimensional grating comprises two input ends; the four on-chip waveguides are respectively connected with the input ends of the two two-dimensional gratings; the optical switch controls an initial light beam to enter the corresponding input ends of the two two-dimensional gratings through one of the four on-chip waveguides according to control signals at four different moments, and four incident light beams at different moments are obtained respectively; the two two-dimensional gratings diffract four incident light beams at different moments respectively to obtain four quantum states at different moments respectively; the micro-optical device obtains two pairs of quantum states with a polarization included angle of 45 degrees and an orthogonal polarization state based on the quantum states at different moments, so as to meet the coding requirements of four quantum states of the quantum key distribution system.

The present application relates to the technical field of networks, and discloses a quantum key distribution method, apparatus, and system. A first quantum device generates a modulated optical signal, the modulated optical signal carrying quantum information and classical information. The classical information and the quantum information are simultaneously modulated on at least one polarization of the modulated optical signal. The modulated optical signal comprises a plurality of subcarriers in different frequency bands. The classical information and the quantum information are located in different subcarriers among the plurality of subcarriers. The classical information comprises quantum key negotiation information. The first quantum device sends the modulated optical signal to a second quantum device by means of an optical fiber link. Quantum information and classical information are modulated on a same polarization of an optical signal, and thus, the system capacity is high. The quantum information and classical information are respectively modulated on subcarriers in different frequency bands in the optical signal, and thus, respective modulation precision requirements of a classic signal and a quantum signal can be met. The quantum information and classical information are simultaneously transmitted by means of one set of devices, thereby saving hardware cost.

The invention provides an information transmission multiple encryption and decryption method and system based on a random light field, and relates to the technical field of optical encryption, and the method comprises the steps: encrypting plaintext information and multiple secret keys into a coherent structure of the random light field, and synthesizing the random light field carrying ciphertext information and secret key information through employing a complex amplitude coding algorithm; performing far-field transmission on the synthesized random light field; measuring a coherent structure of a transmitted random light field by using a phase perturbation method, and decrypting information encrypted in the random light field in a far field through inverse transformation in combination with a decryption key; the existing optical encryption technology is expanded by utilizing optical coherence engineering, the development of an optical encryption system for high-security information storage and transmission is promoted, and the application of the optical coherence engineering in high-security optical communication and quantum information is stimulated.

A method of exchanging quantum information between a photon and a micro / nano scale resonant structure is provided. The method comprises providing the resonant structure (15) in an optical waveguide (10). The method further comprises passing a photon (18) through the resonant structure in the optical waveguide. The method also comprises applying a driving signal (17) to the resonant structure to cause phonic oscillation of the resonant structure and to modulate a wavelength of the photon such that the passing the photon through the resonant structure results in an exchange of quantum information between the photon and a quantum state in a phonon of the resonant structure.

The invention provides a phase state interference performance measuring device and method, and mainly relates to the technical field of quantum information. The measuring device comprises a pulse preparation module which is configured to generate an optical pulse pair at a preset frequency; the unequal arm interferometer is configured to perform interference processing on the light pulse pairs based on the long and short arm delay difference to obtain interference pulse signals and non-interference pulse signals corresponding to each light pulse pair; the measuring module is configured to measure the interference pulse signals and the non-interference pulse signals corresponding to the multiple optical pulse pairs respectively to obtain detection responses of the multiple interference pulse signals and detection responses of the multiple non-interference pulse signals; and a data processing module configured to determine response counts of interference peak positions and response counts of non-interference peak positions in a plurality of sampling periods based on the detection responses of the plurality of interference pulse signals and the detection responses of the plurality of non-interference pulse signals so as to obtain a phase state interference result and a phase state non-interference result.

A photonic integrated circuit comprising one or more waveguides comprising a second order non-linearity configured to operate on optical pulses each having a pulse length shorter than 1000 optical cycles, as measured at their full width at half maximum. The circuit is configured to generate one or more quantum states carried by one or more of the optical pulses, manipulate one or more of the quantum states, and / or measure one or more of the quantum states.

The invention provides a superconducting quantum chip and a manufacturing method thereof, and relates to the technical field of quantum information, a first superconducting layer and a second superconducting layer in a superconducting structure are communicated by adopting an air bridge, the potential difference and the slot line mode between the first superconducting layer and the second superconducting layer are further eliminated, and the performance of the superconducting quantum chip is improved. The bridge deck width of the bridge deck part provided by the invention is optimally designed, that is, the bridge deck width of the bridge deck part is designed to be gradually reduced in the direction from the joint of the bridge deck part and the first bridge pier part and the joint of the bridge deck part and the second bridge pier part to the middle area of the bridge deck part; according to the invention, the stray capacitance between the air bridge and the superconducting transmission line is reduced, the influence of the stray capacitance on the superconducting quantum chip is improved, the performance of the superconducting quantum chip is further improved, the strength and stability of the bridge surface part are improved, the probability of collapse of the air bridge is reduced, the manufacturing difficulty of the bridge surface part of the air bridge is reduced, and the manufacturing cost is reduced. And the manufacturing process of the air bridge is simplified.

The application relates to the fields of quantum architecture design, quantum dots and phononic crystals, and particularly relates to a carbon nanotube quantum dot regulating device and method based on a sound cavity, wherein the device comprises a phononic cavity, a gate electrode, a metal coating, a carbon nanotube and a groove; the regulating method regulates a quantum bit through the coupling of the phononic cavity and the quantum dot from an external input signal, stores a quantum state by using cat state coding in the phononic cavity, improves the reliability of information storage, prolongs the retention time of quantum information, enhances the stability of regulation and reduces errors in the regulation. The design significantly reduces the size of a single quantum bit to micron level, thereby laying a foundation for realizing the chip integration of millions of quantum bits. The design based on the sound cavity not only improves the density and scalability of quantum bits in quantum computing, but also provides a new idea for the development of future large-scale quantum computing by introducing the efficient regulation of the phononic cavity on the quantum dot.

Disclosed are metalloproteins (e.g, vanadyl-substituted metalloproteins), such as metal-substituted rubredoxins including vanadyl-substituted rubredoxins. These metalloproteins can be used in quantum computing applications, for example, as quantum bits (qubits) or quantum dits (qudits).

This invention discloses a quantum entangled light spatial correlation imaging method based on iterative deconvolution, belonging to the field of quantum information. The method includes the following steps: illuminating the target sample with a position-momentum entangled light source, and acquiring multiple frames of entangled light carrying sample information using a single-photon camera; performing statistical operations on the acquired multi-frame images to remove irrelevant background noise and obtain a joint probability distribution image of the sample; extracting the correlation width using the spatial distribution image of the joint probability distribution through differential coordinate projection to construct the point spread function of the optical system; using the point spread function for forward convolution projection and backward error projection, updating the image estimate through iterative calculation until the convergence condition is met to obtain the target sample image. This invention utilizes a camera to image with a position-momentum entangled light source under low illumination conditions, which can obtain high-contrast target imaging and has potential advantages in imaging light-sensitive samples.

The invention relates to a color router for photon momentum control and a preparation method thereof. The color router is composed of a metal nano antenna, a carbon nano tube film and a printed circuit board. When an electron beam excites the edge of the metal nano antenna, green light and red light components emitted by a far field are distributed along different propagation directions, and when an impact position is located at the center, a non-split pattern is generated. In addition, the conversion of the characteristic radiation direction can be triggered by controlling the electron beam excitation position. The active modulation of the dichroic photon splitting can be effectively realized by adjusting the excitation position and changing the far-field interference of the dipole moment and the quadrupole moment. According to the invention, a pleasant platform is provided for controlling the photon momentum on the nanoscale, and a way is laid for the quantum information technology and the integrated photon system in the future.

The present invention belongs to the field of quantum information technology, and discloses a reference-frame-independent quantum key distribution method with a light source monitoring function. It allows the light source to follow an unknown photon number distribution, only assuming that its light intensity fluctuates within a certain range. By using a beam splitter to estimate the parameters of four response events generated after splitting the light source, the passive light source monitoring function is completed. Compared with the RFI-QKD scheme using active light source monitoring, this method does not require an attenuator to actively modulate the light intensity attenuation coefficient, thus avoiding the introduction of additional modulation errors and improving the actual performance of the RFI-QKD system. Compared with the original RFI-QKD protocol, it has better anti-light source jitter ability.