64 results about "Quantum network" patented technology

The invention relates to an entanglement request scheduling method based on a quantum network. Comprising the following steps: firstly, establishing a routing path selection method of a single remote request, and selecting a routing path with the highest end-to-end fidelity for each request; establishing a two-stage request scheduling strategy; and finally establishing a comprehensive evaluation mechanism based on the network throughput, the fairness index and the request service rate. Through the setting, in a quantum network purification operation scene, the end-to-end fidelity is used as a key index of request priority ranking, a refined fidelity evaluation model is established, resource requirements and application values of different entanglement requests are accurately quantified, high-fidelity requests are preferentially scheduled to enter a resource allocation queue, and the resource allocation efficiency is improved. Meanwhile, the resource loss characteristics in the purification process are dynamically adapted, dual optimal configuration of entangled resources in the time dimension and the space dimension is achieved, the service quality of high-value requests is guaranteed, resource idleness and waste are avoided, and the overall resource utilization rate is remarkably increased.

A system for quantum-enhanced behavioral analysis and secure database operations includes an ACAARY Database configured to store and process quantum-verified data under multi-tiered access control; an AR Quantum Cyber-Micro Expressions System configured to analyze involuntary behavioral patterns in digital communications via computational analysis of user interaction data; AR Quantum Sequence Triplications with Quantum Operations comprising three-qubit verification circuits implemented on superconducting quantum processors that perform parallel artificial-qubit processing to achieve unbiased quantum supremacy; an AR Quantum Parallel Data Algorithm Structure and Method Specialized Encrypted Algorithmic Quantum Procedures configured to execute simultaneous perpendicular encryption processing with real-time transaction verification across multiple channels; an AR Helmsmen Quantum Transportation Management System with integrated digital licensing and frequency-based quantum routing protocols; and an AR Thermodynamics Devices System configured to perform thermal bonding and division operations while maintaining different temperatures within defined containment areas for material modification.

Quantum networks having topologies defined by connected entanglement graphs which comprise plural vertices connected by plural edges are disclosed. The entanglement graphs are not all-to-all connected. The entanglement graphs may be non-planar graphs. At least some of the vertices are connected to three or more of the edges. Nodes of the quantum network correspond to vertices of the entanglement graph. Entanglement means are operable to directly entangle quantum systems in those pairs of the nodes which respectively correspond to vertices of the entanglement graph that are connected by an edge of the entanglement graph. Optical paths used by the entanglement means may include optical paths provided by braids or knots that are configured to interface to one or more units which include the nodes.

Embodiments of systems providing quantum cyber resilience protection of digital assets of a computer system in transit from tampering and / or decrypting including quantum computer cryptographic attacks.

The application discloses a bit data transmission scheduling method based on 6G space-ground integrated quantum network, a storage medium and equipment, and comprises the following steps: constructing a 6G space-ground integrated quantum communication network; searching for nodes meeting network scheduling task requirements in the quantum communication network, constructing a candidate node set, and screening out a determined best emission node; sending a quantum state to a receiving end through a quantum key distribution protocol at the best emission node, calculating a quantum bit error rate, selecting a candidate relay node from the candidate node set with the minimum quantum bit error rate as the target, and forming a quantum transmission channel; and the quantum transmission channel prepares a quantum key by using an entangled state, generates a random matrix density, generates a ciphertext through the random matrix density, and transmits the ciphertext to the receiving end. The application can reasonably schedule network resources, ensure data security through quantum communication, and the like.

The invention provides a quantum network security test system and method, and belongs to the technical field of quantum communication. Wherein the physical hardware layer provides a quantum physical communication scene; the virtualization layer provides a quantum simulation communication scene and a quantum network attack; a user performs resource scheduling and parameter configuration on the quantum physical / simulation communication scene through a graphic interaction interface provided by the management platform, and issues a test task to the control management layer; and the control management layer adjusts the quantum physics / simulation communication scene based on the received resource scheduling instruction and the parameter configuration instruction, and loads a preset test script based on the received test task to control the virtualization layer or the physical hardware layer to execute the test task and monitor the response behavior in real time. According to the invention, the quantum network test environment is enriched, and the quantum network security evaluation capability and the quantum network attack simulation capability are improved.

This application discloses an incremental training method, server, and object detection system for an object detection model. The method includes: training an original OVD visual backbone network, an OVD predefined detection subnetwork, and a language model using a large image description dataset to obtain frozen first network parameters of the OVD visual backbone network; training the original OVD visual backbone network and the incremental subnetwork based on a pre-trained dataset to obtain an updated OVD visual backbone network and a trained incremental subnetwork, using the parameters of the trained incremental subnetwork as second network parameters; loading the frozen first network parameters of the original OVD visual backbone network and the second network parameters of the incremental subnetwork, and fine-tuning the incremental subnetwork using gradient backpropagation based on user incremental data to obtain third network parameters of the incremental subnetwork; and generating a fusion network of the OVD predefined detection subnetwork and the incremental subnetwork corresponding to the third network parameters as an object detection model.

The nested network includes a plurality of nodes, each including a high-level and a low-level quantum system. The intra-node optical network can be configured to interconnect the quantum systems of each of the nodes. The inter-node optical network can be configured to interconnect the high-level quantum systems of the plurality of nodes. The high-level quantum system can be selectively connected to the intra-node optical network or the inter-node optical network. Each quantum system can include one or more broker qubits and one or more client qubits. Entanglement of quantum systems in different nodes can be performed by attempting to entangle the quantum states of pairs of high-level quantum systems in parallel, and upon successful entanglement of one pair, transfer the entanglement to the low-level quantum systems of each node.

The disclosure includes a multiplexed telecommunication-band quantum network that utilizes atomic arrays in optical cavities. An example quantum networking system includes at least one quantum repeater node. The quantum repeater node includes an array of neutral atoms disposed in an optical cavity and a fiber-optic switch (FOS). The FOS is optically coupled to the optical cavity. The quantum repeater node also includes at least one beamsplitter. The at least one beamsplitter is optically coupled to the FOS.

The invention relates to the technical field of quantum communication, in particular to a cross-domain user login system based on a quantum key distribution network, which comprises a field extraction module, a security domain analysis module, a quantum state negotiation module, a quantum encryption encapsulation module, a quantum decryption verification module and a security tunnel establishment module, the field extraction module extracts a user identity identifier and an anti-replay random number from the login request; the security domain analysis module analyzes the identifier to obtain a security domain and a quantum network node; the quantum state negotiation module generates session quantum key pairs based on node negotiation; the quantum encryption packaging module encrypts the random number and the voucher by using a user side key to obtain a quantum encryption login voucher; the quantum decryption verification module uses the server side secret key to decrypt and verify, and outputs an authentication result; the secure tunnel establishment module derives a key according to the result, and establishes a cross-domain secure communication link; according to the invention, the security and authentication efficiency of cross-domain user login can be improved.

The invention discloses a quantum key distribution network dynamic optimization method and system, a terminal and a storage medium. The method comprises the following steps: obtaining quantum channel state information in a quantum network; constructing a graph neural network dynamic model, and inputting the quantum channel state information into the graph neural network dynamic model to obtain link selection probabilities corresponding to a plurality of links; determining a key injection instruction according to the plurality of link selection probabilities; and generating an execution result according to the key injection instruction. According to the method, real-time optimization under channel jitter can be realized, and the key distribution efficiency is improved, so that the key rate can be improved, and the system efficiency is improved.

The application discloses a quantum network relay node fault positioning method, device and system, comprising obtaining relay hash values uploaded by each relay node, wherein the relay node comprises an initial node, an intermediate node and a to-be-tested node, the relay hash values uploaded by the intermediate node and the to-be-tested node are homomorphic hash values of XOR values of two adjacent relay keys, and the relay hash value uploaded by the initial node is a homomorphic hash value of an XOR value of a relay key and a session key between the initial node and a next hop; obtaining a session key ciphertext hash value uploaded by the to-be-tested node, wherein the session key ciphertext is an XOR value of a relay key and a session key between the to-be-tested node and a next hop; performing homomorphic algorithm verification based on the relay hash values uploaded by each relay node and the session key ciphertext hash value uploaded by the to-be-tested node, and positioning a faulty relay node; and the application can solve the problem that a specific faulty relay node cannot be positioned when quantum relay is unsuccessful.

The invention discloses a quantum key relay method and device, electronic equipment and a readable storage medium, and belongs to the field of quantum communication networks. Comprising the following steps: acquiring a plurality of application tasks, and determining a task queue of the application tasks needing to be subjected to key relaying from the plurality of application tasks; obtaining network information of a quantum network, and determining a quantum key relay path of a target application task based on the network information; and if the determination is successful, sending a key relay instruction to each node in the quantum key relay path, so that a source node in each node generates a shared key and sends the shared key to a destination node through an intermediate node, and sending a key identifier of the shared key to an application program corresponding to the target application task, and the application program carries out encrypted communication based on the key identifier. The key distribution method and device solve the core problems of low key distribution efficiency and resource waste in a traditional scheme.

In an example, the present invention provides a quantum repeater system and its application to quantum network. The quantum repeater system includes a nano-fiber based quantum computer device.

The application discloses a financial-grade database multidimensional security management and control system and method, relates to the technical field of financial data security management and control, and deploys a quantum encryption network and a backup key pool; initializes a data hierarchical management mechanism and a key management hub; transforms a database engine and builds a trusted audit hub, and deploys a security agent on a database node. Through the cooperation of the quantum encryption network and the post-quantum backup key pool, the high security of quantum encryption is utilized to resist traditional and quantum computing threats, and the encryption service is ensured not to be interrupted when the quantum network is abnormal, thereby meeting the continuity requirement of financial transactions; fine-grained data grading is combined with a differentiated security strategy, encryption algorithms, access permissions and retention periods are configured for high-sensitive, medium-sensitive and low-sensitive data respectively, precise protection is realized, and operation efficiency is taken into account; and a multi-role key cooperation mechanism avoids single-point key leakage, and the original key is destroyed after the key is generated, so that the key security is further improved.

The utility model discloses a quantum whiteboard system, which comprises a quantum whiteboard user side, a quantum safety service station, a quantum key management module, quantum key distribution equipment and a quantum safety service terminal, the quantum key distribution equipment is used for performing quantum key charging on the quantum whiteboard user side; the quantum security service station is bidirectionally connected with the quantum whiteboard user side, the quantum key management module and the quantum security service terminal, and the quantum key management module is bidirectionally connected with the quantum key distribution device. The utility model discloses a quantum whiteboard system, which realizes quantum secret communication among a quantum whiteboard client, a quantum security service station and a quantum security service terminal through a quantum key generated by quantum key distribution equipment, improves the security of data transmission, and solves the problem that a pseudo-random number serving as an encryption key is not safe enough. The important body of the quantum whiteboard is widely applied to the fields of quantum networks and quantum password commercial passwords.

The embodiment of the invention relates to the field of quantum network communication security, and discloses a quantum network scheduling method and device, electronic equipment and a storage medium. According to the method, resource scheduling information is collected through resource and state interfaces provided by a quantum network layer; dynamically opening the service according to the resource scheduling information, and adjusting a key link according to the opening information of the service; scheduling a relay route according to the service opening information and the key link adjustment condition, and generating a quantum key transmission path and change information of each route; and generating a downlink operation instruction interface according to the change information, and issuing the downlink operation instruction interface to the quantum communication network. The intelligent scheduling and management of the quantum secret communication network are realized, the system operation efficiency is greatly improved, and the user experience is improved.

The invention discloses a partition-based airborne quantum network efficient entanglement resource distribution method, apparatus and device. The method comprises the steps of determining a long-distance multi-hop entanglement path of an airborne communication platform based on an improved shortest path algorithm; according to a long-distance multi-hop entanglement path, relay nodes between a source node and a destination node are divided into a plurality of first-class regions, each first-class region comprises a preset number of intermediate nodes, if the number of remaining nodes after path division is less than the preset number, the first-class regions are independently divided into a second-class region so as to establish multi-hop entanglement connection, sequential entanglement swap operation is adopted between adjacent sub-regions of a long-distance multi-hop entanglement path, and the sequential entanglement swap means that after entanglement swap is completed in a current sub-region, entanglement swap starts to be executed in a next sub-region so as to establish an entanglement link between a source node and a destination node. The invention provides an entanglement distribution scheme applicable to an airborne communication platform so as to improve network performance.

The present invention relates to a tunable nanobeam cavity resonator (100), the tunable nanobeam cavity resonator comprising: a first optical cavity (102); a second optical cavity (104), the second optical cavity being optically coupled to the first optical cavity (102); a conductive portion (106); and an electrode (108), wherein the first optical cavity (102) and / or the second optical cavity (104) comprises a quantum emitter configured to carry quantum bits. The first optical cavity (102) and the second optical cavity (104) are disposed in the tunable nanobeam cavity resonator (100) such that there is a gap (110) between the first optical cavity (102) and the second optical cavity (104). The conductive portion (106) is configured to move relative to the electrode (108) and the first optical cavity (102) when a voltage is applied between the conductive portion (106) and the electrode (108); the conductive portion (106) is mechanically connected to the first optical cavity (102) and the conductive portion (106) is mechanically connected to the second optical cavity (104) such that movement of the conductive portion (106) causes movement of the second optical cavity (104) relative to the first optical cavity (102) to adjust the gap (110) between the first optical cavity (102) and the second optical cavity (104).

The invention discloses a quantum digital signature method and system for multi-receiver verification arbitration, and relates to the technical field of quantum digital signatures, secret key consumption is reduced from O (k2) magnitude to O (k) magnitude through a secret key synthesis technology, and under the same security parameter and message length, the secret key consumption of the scheme of the invention is reduced by at least two orders of magnitude compared with the existing scheme; based on the information theory security of the quantum key and the unconditional security of one-time hash / encryption, the scheme of the invention can effectively resist forgery attack and denial attack, and the security is strictly proved; the multiple receivers can interact with the arbiter at the same time and complete verification independently, the whole signature verification time of the system is greatly shortened, and the method is particularly suitable for large-scale quantum network application.

The invention relates to a quantum network, in particular to a large-scale reconfigurable multiplexing quantum network system, a working method and a local multi-user quantum network, the large-scale reconfigurable multiplexing quantum network system at least comprises two independent local networks, and each network comprises a high-dimensional entanglement source and a plurality of user nodes. A high-dimensional space mode entanglement state generated by the high-dimensional entanglement source is multiplexed into a plurality of quantum bit entanglement channels to be distributed to each user node; the programmable multi-port interconnection equipment is used for connecting the local multi-user quantum networks to form a global quantum network capable of reconstructing entangled connection as required; the user node is provided with a detection device comprising a spatial light modulator, a single-mode optical fiber and a single-photon detector and can execute projection measurement in any spatial mode; according to the technical scheme provided by the invention, the defect that a large-scale and reconfigurable global quantum network capable of simultaneously carrying out entanglement routing and entanglement exchange on a plurality of channels is difficult to realize in the prior art can be effectively overcome.

This invention discloses a method for characterizing the nonlocality of chain-type quantum networks. This method can characterize the nonlocality of any chain-type quantum network. Based on existing chain-type quantum network models and their associated linear Bell inequalities, it constructs longer chain-type networks by adding two quantum sources and two quantum measurement devices at a time, resulting in new linear Bell inequalities. The nonlocality of this longer chain-type network is verified by the quantum violation of this inequality. The method of this invention overcomes the shortcomings of existing methods, such as slow verification efficiency and difficulty in quantifying and characterizing the nonlocality of complex quantum networks.

Aspects of the subject disclosure may include, for example, monitoring a security status of a wireless communication session comprising a back-haul link supporting a classical communication channel between a wireless access point and a wireless mobility core network. The classical communication channel is adapted to transport underlying data of the wireless communication session and, responsive to determining a change in the security status, associating with the wireless communication session a quantum communication channel adapted to transport information via qubits. Information is exchanged between the wireless access point and the mobility core network via the qubits of the quantum communication channel, wherein the exchanging of the information via the qubits enhances a security level of the wireless communication session in view of a perceived threat. Other embodiments are disclosed.

A system for communicating information using quantum packets includes a memory configured to store data for transmission and a processor operably coupled to the memory. The processor divides the data for transmission into a first number of blocks. Each block is then encoded into a second number of quantum packets encoded as a plurality of quantum bits. Each of the second number of quantum packets includes at least one of the of the blocks and a mapping. The quantum packets are then transmitted through a quantum network to a second system for reconstruction. The second system utilizes the mapping included in each quantum packets to reassemble the data.

Example embodiments provide a reconfigurable quantum interface (RQI), preferably for quantum networking purposes. The RQI accepts input signals at numerous wavelengths and lineshapes, and converts the input signals to a number of different output wavelengths and lineshapes while retaining quantum properties (e.g., entanglements) of the signals. The RQI provides on-demand conversion to and from arbitrary input and output wavelengths and lineshapes.

Proposed is a r-Turing complete, universal quantum computing system and corresponding method for programmable, universal quantum computing. A quantum computing circuit is composed of a plurality of auto-parallelized quantum network devices, wherein each quantum network device comprises one or more quantum logic gates whose computational steps are synchronized in time, wherein a quantum logic gate is a device performing a fixed unitary operation on selected qubits in a fixed period of time, wherein for each quantum logic gate one or more qubits form an input quantum register to the respective quantum logic gate and one or more qubits form an output quantum register to the respective quantum logic gate, the outputs of the quantum logic gates being at least partially connected by wires to the inputs of other quantum logic gates, and quantum network devices performing the computational steps by its quantum logic gates within one clock cycle.

The application discloses a kind of security servers based on quantum key network and its working method, the security server includes the outer net machine, isolation board and inner net machine connected in turn;Outer net machine is used to split and reorganize the first UDP message data transmitted by the sender through the Internet into the first ciphertext data packet, and the first ciphertext data packet is transmitted to the isolation board.The application deploys application program server in the inner net machine of security server, has very high security, and the data attack of Internet cannot reach the inner net machine;At the same time, it can also support the deployment of multiple application program servers, customize the reorganization of Internet data transmission format to unify the data transmission format, and then send it to the inner net machine for unified quantum encryption and decryption, which reduces a large number of complex adaptation management work, saves a lot of time and energy, and also provides convenience for later maintenance and upgrading work, increases the efficiency and security of application program server access to quantum network.

The invention discloses a method and device for preparing a multi-photon entangled state, and the method comprises the steps: confining a single two-energy-level system in an optical cavity, and coupling the system to a Puxel region; carrying out continuous weak driving on the fluorescent light by using detuned laser to obtain fluorescent photons; the fluorescence photons are guided into a spectrum filtering device according with a preset rejection ratio, and the resonant frequency of an optical filtering cavity is locked on the continuous weak driving laser frequency; and preparing a multi-photon entangled state based on the output of the spectral filtering device. According to the invention, preparation of a multi-photon entangled state is realized by using intrinsic quantum nonlinearity based on a two-energy-level quantum system; compared with an existing light source scheme based on a complex multi-level structure or a probabilistic nonlinear process, the light source has the advantages of simplified system structure, high stability, high entangled state quality and the like, and can be applied to various quantum networks.

The present disclosure relates to systems and method for generating a quantum random number using a quantum network. The system may comprise a receiver for receiving from a plurality of nodes in a quantum network a plurality of initial quantum random numbers "IQRNs", wherein each initial quantum random number (IQRN) is generated by executing a quantum protocol between a first node and a second node comprised in the quantum network, and wherein each IQRN is associated with a first unique identifier (ID) uniquely identifying the first node, and a second unique identifier (ID) uniquely identifying the second node; a processor configured to: analyse the plurality of IQRNs and retain a subset of the IQRNs that satisfy a consensus criterion; generate the QRN using the subset of retained IQRNs.

A distributed quantum computing system 100, e.g. a quantum memory, comprises: quantum computing units 102 of qubits; quantum networking units 104, each coupled to qubits on the quantum computing units