222 results about "Quantum information" patented technology

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 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 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.

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.

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.

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 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.

The disclosure is directed to a method including executing, at a first time, a precompute algorithm that is a first portion of a quantum algorithm. Executing the precompute algorithm generates a precompute output that includes first quantum information encoded in a first set of qubits. A runtime input for the quantum algorithm is received at a second time that is subsequent to the first time. A runtime algorithm is executed, at a third time that is subsequent to the second time. The runtime algorithm is a second portion of the quantum algorithm. Executing the runtime algorithm is based on the first quantum information encoded in the first set of qubits. Executing the runtime algorithm generates a runtime output that includes second quantum information encoded in a set of qubits. An output of the quantum algorithm is provided. The output of the quantum algorithm is based on the second quantum information.

The invention relates to the technical field of quantum information, in particular to a quantum random number generation method and system. The method comprises the following steps: sampling ASE noise analog electric signals at a rate greater than the bandwidth of a photoelectric detector and a rate less than the bandwidth of the photoelectric detector through a sampling oscilloscope to obtain two original random sequences; through a post-processing module, moving each element in each original random sequence rightwards according to a preset digit of the sequence; vacancies generated after right shifting are circularly complemented by starting elements on the left side of the sequence, and a target random sequence of the original random sequence is obtained; performing differential operation on each original random sequence and a target random sequence thereof, setting elements greater than 0 as 1, setting elements less than 0 as 0, rejecting elements equal to 0, and constructing a binary sequence of each original random sequence; and performing XOR operation on the binary sequence of each original random sequence to obtain a target quantum random number. According to the invention, the quantum random number generation cost is reduced, and the generation rate is improved.

The application discloses a quantum device and an electronic device and a preparation method thereof, and belongs to the field of quantum information. The quantum device comprises a quantum chip, a signal transmission element formed on the quantum chip, and a connecting part electrically connected with the signal transmission element; a packaging substrate, a lead-out part formed on the packaging substrate, and a lead-out signal line for electrically connecting with a signal connector, the lead-out signal line being electrically connected with the lead-out part; and a ball grid array electrically connecting the corresponding connecting part and the lead-out part. The ball grid array electrically connects the connecting part and the lead-out part corresponding to the signal transmission attribute, thereby realizing the electrical connection between the quantum chip and the transmission line, and further leading out the connecting part to the external signal connector. In the application, the ball grid array does not generate a complex field effect, and the electrical connection of the corresponding connecting part and the lead-out part by the ball grid array can avoid the interference caused by the bonded aluminum wire.

The present invention relates to a quantum information storage device (100) comprising a vacuum chamber (2), a plurality of waveguides (4) configured to propagate light of wavelength λ, each waveguide (4) having a narrower cross-sectional segment with a minimum lateral dimension less than λ, and an atomic trap configured to trap a single atomic cloud (20) around the narrower cross-sectional segment of the plurality of waveguides.

The inventors have developed techniques to facilitate the operation of a quantum oscillator with increased bit-flip lifetimes by inducing an energetic asymmetry between qubit states. The technology may be used for the storage of quantum information or for providing a system for quantum information processing with longer bit flip lifetimes. The technology includes a qubit along with corresponding drives for controlling the energetic barrier and energetic asymmetry between the energetic potentials for each qubit state.

One aspect of the present disclosure relates to a method for configuring a quantum computing system, where the quantum computing system includes a plurality of qubits arranged on a two-dimensional (2D) lattice, and is configured to perform a plurality of quantum computing operations. A method of the present disclosure includes receiving a selection of a first plurality of qubits and a second plurality of qubits of a plurality of qubits representing two different degrees of freedom associated with respective components of a physical system to be mapped to the first plurality of qubits and the second plurality of qubits. Adjacent qubits of a first aspect are configured to transmit quantum information between each other. A number of chains of the first plurality of qubits and a number of ladders of the second plurality of qubits are configured to perform a plurality of quantum computing operations.

The invention discloses a universal multi-party quantum key negotiation method based on entanglement swapping, and belongs to the field of quantum information. The method mainly comprises the following steps: 1, participants prepare quantum resources, group the quantum resources and send the quantum resources to corresponding participants; second, the participant measures the held sequence and derives the shared key from the measurement result. The key pre-distribution method has the following three main contributions: firstly, information pre-sharing is not needed, and leakage and tampering risks in a key pre-distribution link are reduced; secondly, the participants do not need to execute additional operation, noise sources are reduced to the maximum extent, and implementation complexity is reduced; and thirdly, successfully using Qiskit analogue simulation to verify the feasibility of the provided method.

An artificial intelligence based computer security system includes a critical infrastructure protection & penalty (CIPR) through cloud & tiered information security (CTIS), a machine secret intelligence (MACINT) & penalty through clandestine operations in cyberspace, a logical inference zero database (LIZARD) priori real time defense, a critical thinking memory & perception (CTMP), a lexical objectivity mining (LOM), a linear atomic quantum information transfer (LAQIT), and a universal BCHAIN all things connected (UBEC) system with basic connectivity coordination attachment integrated nodes.

Systems and methods for retrieving quantum information are described. An exemplary system can include a quantum cloning unit, a photon number splitting (PNS) unit, and a variable-strength measurement unit to improve the accuracy and reliability of quantum state estimations without significant decoherence. The quantum cloning unit can be used to generate approximate clones of a qubit. If the information is encoded in a multiphoton state, resulting in a multiphoton state qubit, the PNS unit can be used to capture the multiphoton state and reflect a single photon from it, which can then be subjected to quantum cloning.These qubits and qubit clones can then be subjected to variable-strength measurements, providing detailed analysis with minimal impact on quantum properties such as superposition and entanglement.

The invention provides a controlled bidirectional remote transmission method of any quantum state, and relates to the technical field of quantum communication. According to the invention, a control party David and communication parties Alice, Bob and Candy are introduced to construct a cooperative communication system, and the three communication parties all have receiving and transmitting bidirectional functions, so that the limitation of traditional one-way transmission is broken. Two core communication paradigms of quantum invisible transmission and remote state preparation are creatively fused, a maximum entanglement state sharing mechanism is constructed between a communication party and a control party, and bidirectional interactive transmission of quantum information is realized under cooperative regulation and control of the control party: Alice can invisibly transmit any single-bit state and two-bit state to Bob and Candy respectively, and Alice can invisibly transmit any single-bit state and two-bit state to Bob and Candy respectively; at the same time, Bob and Candy can also be used for jointly and remotely preparing any two bit states for Alice. In a transmission process, a receiver can perfectly reconstruct a target quantum state through a series of quantum measurement and unitary transformation operations, so that deterministic bidirectional hybrid transmission of quantum information is achieved. According to the technical scheme, organic fusion of two quantum communication modes is achieved, a multi-node collaborative quantum information interaction architecture is constructed, a core technology foundation is laid for constructing an efficient and flexible quantum communication network, and the application potential of quantum information transmission is remarkably improved.

Described herein relates to an antenna-coupled graphene Josephson-junction THz / mm-wave apparatus (hereinafter “video”) detector apparatus and methods thereof. Highly sensitive, broadly tunable detectors may be needed for future sensing applications and quantum information systems. In an embodiment, the video detector apparatus may comprise stacked graphene sheets having a “magic” twist angle between their in-plane symmetry axes. As such, the material may display superconductivity with at least 2 K transition temperature. Additionally, the video detector apparatus may depend on the decrease in the maximum zero-voltage DC current when AC current is driven through the junction.

A quantum computing system may include a dual-helix quantum encoding structure a multidimensional modulation controller. The dual-helix quantum encoding structure may include a first helix chain and a second helix chain. The multidimensional modulation controller may be configured to modulate quantum information in the first and second helix chains using two or more of frequency modulation, phase modulation, and amplitude modulation. The frequency, phase, and amplitude modulation may enhance information processing, storage, parallel computation, and error correction in quantum computing systems. Alternatively or additionally, embodiments herein may provide a new direction for scaling quantum computers for large-scale, complex tasks, and may offer improvements in speed, accuracy, and efficiency.

The invention relates to the technical field of quantum information, and discloses an integrated superconducting quantum bit radio frequency module, which comprises a distribution board card, a merging board card, a reading board card and a case shell, and is characterized in that the distribution board card and the merging board card are connected and fixed through an inter-board radio frequency connector; the assembling number of the combination board cards is determined by the final distribution number of the distribution board card power division circuit, an IQ signal of an IQ combiner in the distribution board card is connected to the board connection vertical paste connector after passing through the Gaussian filter circuit, and other signals, except the IQ signal, of the IQ combiner in the distribution board card are connected in and out from the side paste radio frequency connector; the function structure of the reading board card is similar to that of the distribution board card, and the reading board card is used for controlling a reading circuit of the superconducting quantum computing chip.

The invention relates to quantum key distribution, in particular to a passive optical network system based on continuous variables and a multi-user key distribution method, and the method comprises the following steps: a provider is used as a network center and is responsible for generating a randomly modulated continuous variable coherent state; the quantum broadcast channel is used for transmitting a coherent state from a provider to the passive optical beam splitter by taking an untrusted single-mode optical fiber as a medium; the passive optical beam splitter is a passive core device and is used for definitely distributing the coherent state into a plurality of parts according to energy and distributing the coherent state to a plurality of user terminals; the user terminal measures the orthogonal component of the received optical signal, extracts the quantum random number of the original code, and completes the receiving and analysis of the quantum information; the classical authentication channel is used for establishing a secure classical communication link between a provider and a user terminal and is used for key post-processing negotiation and compressing coordinated data into a final secure key according to a parameter estimation result and a security protocol; according to the invention, the defect that deterministic and simultaneous multi-user key distribution is difficult to realize can be overcome.

The invention discloses a new-generation cryptographic system and method based on a physics quantum dynamic public key and a cloud entropy synchronous private key, a terminal, a server and a medium, and relates to the technical field of quantum information technology, cryptography and Internet of Things security crossing. The system comprises a terminal, a server and a cloud entropy synchronization private key library, and the terminal is configured to generate a quantum random number by using a quantum random number generation module, generate a synchronization parameter based on the quantum random number, and send the synchronization parameter or a physics quantum dynamic public key exported by the synchronization parameter to the cloud entropy synchronization server; and the terminal and the cloud entropy synchronization server are further configured to determine the same target entropy material from the cloud entropy synchronization private key library by applying the same cloud entropy mapping algorithm based on the synchronization parameter, and generate the same session key based on the target entropy material. According to the key system, non-interactive key establishment, forward secrecy and endogenous quantum computing attack resistance are realized.