154 results about "Quantum information" patented technology

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.

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.

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 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.

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.

A system comprising a quantum information engine (QIE). The QIE includes a topological surface state three-dimensional topological insulator (TSS-3DTI) to flow, in a first flow direction from an input side to an output side, electrons having a first spin-momentum. The TSS-3DTI includes a first surface. The first surface has first spin-momentum locked charge carriers and a plurality of first magnetic impurities having a second average nuclear spin polarization. The TSS-3DTI stores information in the first surface at the points of interaction that occur between the plurality of first magnetic impurities interacting with the flowing electrons to exchange, at each point of interaction, a nuclear spin of a respective first magnetic impurity with an electron spin of a respective flowing electron. The system can include at least one surface. The system can harvest energy from other integrated circuits. A method of storing quantum energy is also provided.

A quantum information system comprising a quantum information element and a control line, the quantum information element comprising: a first Josephson element and a second Josephson element, each Josephson element comprising a Josephson junction disposed between two superconducting islands, one of the superconducting islands is shared by the first Josephson element and the second Josephson element; wherein the superconducting island of the first Josephson element is coupled to the superconducting island of the second Josephson element such that the quantum information element comprises a plurality of states, the plurality of states comprising a first state, a second state, and a third state, where there is a single excitation transition between the third state and the first state, and there is a single excitation transition between the third state and the second state; and wherein the control line is configured to encode one of two states of the computing subspace into the quantum information element, a first state of the computing subspace corresponding to the first state, and a second state of the computing subspace corresponding to the second state.

The application provides an optical quantum computing system, an optical quantum chip and an optical quantum computer, and relates to the technical field of quantum computing. The system comprises a plurality of optical waveguides, a plurality of spatial processing modules and a plurality of temporal processing modules are arranged on the plurality of optical waveguides, wherein: the spatial processing module is used for performing quantum state transformation on input optical quantum information to realize spatial parallel processing; the temporal processing module is used for performing time adjustment processing on the input optical quantum information to realize time multiplexing; the spatial processing modules and the temporal processing modules are alternately arranged between the spatial processing modules and the temporal processing modules, and the adjacent spatial processing modules and the temporal processing modules are connected through the plurality of optical waveguides. The embodiment of the application can realize the dual effective expansion of the scale and the depth of quantum computing.

The application belongs to the field of quantum information, and discloses a quantum control system and a quantum computer, wherein the quantum control system comprises at least one signal processing device and at least one radio frequency transceiver device, each of the signal processing devices comprises a first backboard, a plurality of first signal processing board cards, a plurality of second signal processing board cards and a routing board card are plugged on the backboard connector of the first backboard, the plurality of first signal processing board cards and the plurality of second signal processing board cards are connected with the routing board card; the second signal processing board card is used for generating a low-frequency signal; the radio frequency transceiver device is connected with the first signal processing board card, and the radio frequency transceiver device and the first signal processing board card connected therewith are used for generating and receiving a high-frequency signal. The quantum control system has high integration and strong expansibility, and the system has good overall coordination, so that the measurement and control requirements of a high-qubit quantum chip can be met.

Systems, methods, and apparatus are provided for tracking user interactions in a quantum system. An authentication persona may be routed to a quantum processor. The quantum processor may generate a virtual quantum channel. The virtual quantum channel may execute multiple attribute-based authentication chains concurrently. The quantum processor may dynamically change the attributes in the authentication chains for the duration of a user session. The quantum processor may substantially continuously validate the attributes in each chain for the duration of the user session. The quantum processor may map the virtual authentication channel to a potential state of quantum information. In some embodiments, the system may automatically scale the quantum processor during an authentication task by adding additional quantum circuits to each quantum thread when the authentication task has a duration that is longer than a threshold duration and / or a volume that is larger than a threshold volume.

The invention belongs to the field of quantum information, and discloses a superconducting single-photon detection system, which adopts a parallel vertical compact integrated layout, and comprises a superconducting single-photon detector array arranged in a stable low-temperature area in a low-temperature thermostat; the low-temperature thermostat is used for providing and maintaining a vacuum and low-temperature environment required by the working of the superconducting single-photon detector array; the refrigerating machine compressor unit is coupled with the cryostat through a cold head and used for providing cooling capacity; the electric control module is connected with the superconducting single-photon detector array and the refrigerating machine compressor unit and is used for providing bias, signal processing and state monitoring; wherein the superconducting single-photon detector array, the cryostat, the refrigerator compressor unit and the electric control module are compactly integrated in the vertical direction. By means of the highly integrated and miniaturized system layout, the total height of the system does not exceed 0.5 m, the installation specification of the 11U standard is met, and therefore the problems that a traditional system is large in size and difficult to deploy are solved.

The embodiment of the application relates to the technical field of quantum information, and discloses a novel narrow-line-width entangled light source, a working method and a quantum information processing system. In the application, a pump light source with independently adjustable power and line width is directly combined with an entanglement generation module based on a beam splitter, single-polarization pump light with independently and continuously adjustable power and line width can be generated, and high-quality entangled states are stably generated by using the pump light through a polarization crosstalk-free splitting scheme based on a beam splitter. Therefore, the adaptation capability of the entangled light source to different application scenarios (such as quantum key distribution and entanglement exchange) and the purity of the entangled states are significantly improved.