1805results about "Photonic quantum communication" patented technology

The invention provides a coast defense monitoring system based on unmanned aerial vehicle group collaboration and an application method thereof, and relates to the technical field of coast defense monitoring, and the coast defense monitoring system integrates air unmanned aerial vehicles, water surface unmanned ships and underwater unmanned ships, constructs a four-dimensional collaborative monitoring network, and combines a frequency domain resonance superposition technology and real-time analysis of marine environment variables. A dynamic three-dimensional environment model is generated, threat prediction of a time dimension is realized, multi-source sensor data can be fused in real time, a complete space contour of a target is formed, threat distribution in several hours in the future is predicted through environment change, for example, unmanned aerial vehicle deployment is adjusted in advance to cope with illegal border crossing behaviors in storms, and the risk of threatening is reduced. Quantum entanglement communication and acousto-optic hybrid communication ensure the stability and security of data transmission, and support millisecond response. According to the effect, the real-time performance and foresight of coast defense monitoring are remarkably improved, so that the system not only can quickly cope with current threats, but also can actively prevent potential risks.

The invention discloses a multi-node secure communication method and system based on quantum key distribution, and the method comprises the steps: evaluating multi-dimensional parameters of a quantum channel, dynamically updating a node reputation value, constructing a four-dimensional topological graph database, and generating candidate routing paths based on a Monte Carlo tree search algorithm; a state-action space is constructed by further combining reinforcement learning, and path selection is optimized by using a dual Q network and a priority experience playback mechanism; through multi-dimensional channel assessment and node reputation value dynamic updating, the defects of a traditional quantum network static routing strategy are overcome, the communication safety and efficiency are improved, and low-delay and high-reliability key distribution of a complex quantum network is supported.

The invention discloses a remote proving method for a trusted data space, which relates to the technical field of computer and data security, and comprises the following steps: initializing a trusted environment and generating a dynamic identity key for a heterogeneous terminal containing a CPU (Central Processing Unit), a GPU (Graphic Processing Unit) and an FPGA (Field Programmable Gate Array) based on a hardware security module and a physical unclonable function, and generating a challenge value by a verifier by using a quantum random number; the method comprises the following steps of: firstly, transmitting to a proving party through quantum encryption and a neuromorphic photonic network, constructing proving by the proving party by adopting a tensor decomposition zero-knowledge proving protocol, finishing multi-stage verification on a verification party in combination with a space-time cause and effect graph and quantum signature aggregation, and finally realizing dynamic trust evaluation and adaptive strategy adjustment through a quantum Bayesian network, reinforcement learning and biological feedback. According to the method, the remote attestation performance of the trusted data space is improved, dynamic trust evaluation is realized by means of the quantum Bayesian network and biological feedback, attacks are effectively resisted, real-time requirements are met, trust is accurately evaluated, and the development of the trusted data space is promoted.

The invention discloses a multi-mode optical signal transmission method and device, electronic equipment and a storage medium, and relates to the technical field of computers.The transmitted data stream is divided into a control signal and a data signal, the control signal is a visible light wave band, the data signal is an infrared wave band, and the control signal and the data signal are combined to a single multi-core optical fiber through a combiner; the optical network controller allocates subcarrier resources as required according to the change of network flow in a spectrum dynamic allocation mode to perform data transmission, so that the subcarrier resource allocation adapted to the change of network flow improves the dynamic adaptability, and the allocation of the subcarrier resources as required improves the equipment cooperation efficiency, and in the data transmission process, the data transmission efficiency is improved. Clock synchronization and signal encryption are realized through a quantum key distribution mode, and the security is improved.

The invention relates to an unmanned aerial vehicle detection countering method, which comprises the following steps of: deploying a multi-dimensional sensing network to carry out full-band instantaneous scanning, synchronously acquiring noise characteristics of radio signals, material characteristics of a terahertz wave band and Doppler effect characteristics, mapping to a virtual twinborn body, reconstructing physical parameters, a communication protocol and a behavior mode of a target unmanned aerial vehicle, performing depth comparison by combining a disguise sample library generated by the antagonism generation network, and generating a holographic target file containing a three-dimensional motion vector, an energy feature and a potential threat intention; a target quantum encryption communication link is interfered through a quantum entanglement signal, a controllable plasma cloud cluster is generated, navigation and image transmission signals of the controllable plasma cloud cluster are selectively attenuated, the controllability of the target is judged, and an uncontrollable target is repelled through coded sound waves; and sending a control instruction containing a biological heuristic obstacle avoidance algorithm in stages, and guiding the control instruction to an intelligent recovery cabin. According to the invention, accurate detection, intelligent identification, safe countering and reliable takeover of the unmanned aerial vehicle are realized, and the airspace safety guarantee capability is improved.

The invention discloses a switch secure communication encryption method based on quantum key distribution. The method comprises the following steps: a service party submits a'security-delay-bandwidth 'intention to a zero-trust brain through a quantum policy intention description language; evaluating the real-time quality, key margin and topology accessibility of an optical fiber quantum channel, a classical ultra-high-speed channel and a radio frequency space channel according to intention requirements; triggering a QKD transmitting end and a receiving end to perform quantum state transmission of polarization and OAM coding along the optimal quantum path, completing basis vector comparison, error code verification and privacy amplification, generating a root quantum key, and injecting the root quantum key into an on-chip quantum memory; when a data packet arrives at a switch port, the assembly line takes out Kroot from the first-level key pool, and derives a one-time session key through the HMAC-SHA3; continuously monitoring a quantum channel bit error rate, a key pool margin and an AI abnormal score; and the transmitting and receiving parties synchronously confirm and destroy the session key, write all key life cycle events into a quantum invariant account book, and realize second-level auditing evidence obtaining through block chain hash anchoring.

The invention discloses an oil storage tank oil-water interface measurement system and method and a storage medium, and relates to the technical field of oil-water interface measurement, and the system comprises a data acquisition module, a data processing module, a decision support module and a data security module. According to the oil-water interface measuring system and method for the oil storage tank and the storage medium, a three-dimensional sensing network (distributed sensor network) is constructed by adopting a pressure sensor array and phased array ultrasonic scanning technology and combining dielectric property detection of a microwave dielectric constant sensor; the pressure, the dielectric constant, the liquid level and the vibration data in the tank body are obtained, basic data are provided for subsequent processing, the comprehensiveness of data obtaining can be improved through the sensing network, the pressure data are dynamically calibrated through Takagi-Sugeno fuzzy logic, the influence of temperature drift is effectively eliminated, and the accuracy of data obtaining is improved. The ultrasonic signals are subjected to feature enhancement through the generative adversarial network, and the emulsion layer boundary is accurately recognized.

A quantum communications system includes a communications system. A quantum key distribution (QKD) system is operable with the communications system and includes a transmitter node, a receiver node, and a quantum communications channel coupling the transmitter node and receiver node. The transmitter node transmits to the receiver node a bit stream of optical pulses and includes a plurality of different photon sources, each having associated therewith a respective QKD protocol, and a controller configured to select a given photon source from among the plurality thereof.

In a general aspect, a quantum spectrum sensing system is presented. In some implementations, a quantum spectrum sensing system includes a laser system, a vapor cell sensor, and an optical detector. The laser system includes first and second lasers configured to generate a first and second laser signals. The laser system also includes first and second comb generators configured to produce first and second frequency comb signals based on the first and second laser signals, respectively. The laser system includes a frequency separator that can select frequency components of the second frequency comb signal and a frequency shifter that can shift the selected frequency components toward Rydberg states of a vapor. The vapor cell sensor can receive input optical signals from the laser system and produce output optical signals based on interactions of the vapor with the input optical signals. The optical detector can detect the output optical signals.

The invention discloses an underwater platform data acquisition and transmission system. The system comprises the following steps: an underwater data acquisition module acquires underwater environment information through a heterogeneous sensor and performs standardization processing; the channel modeling module analyzes underwater channel characteristics by using a self-adaptive channel model and generates channel estimation parameters; the channel estimation module is combined with a quantum interference measurement method to correct a channel state and optimize a channel model; the channel optimization and data fusion module constructs a joint feature matching network of underwater acoustic signals and quantum state signals to realize signal fusion and channel feature dynamic optimization; the data transmission optimization module adjusts a data transmission strategy based on the optimized transmission parameters, and the transmission stability is improved; and the energy management module adopts a dynamic power control strategy to realize low-power-consumption operation. According to the method, quantum measurement, sparse Bayesian channel modeling and an adaptive optimization method are combined, and the underwater channel estimation precision, the data transmission efficiency and the system stability are improved.

The present invention provides a semiconductor apparatus achieving interconnection by using an on-chip all-optical switching network module and a manufacturing method therefor. The semiconductor apparatus comprises: a circuit board, which has a plurality of electrical connection paths; an on-chip all-optical switching network module, which is disposed on the circuit board, the on-chip all-optical switching network module comprising a photonic chip and a plurality of analog electrical chips for transceiving which are arranged above the photonic chip, the photonic chip comprising a plurality of communication nodes, a plurality of optical connection paths, and at least one on-chip optical switch which are in corresponding communication connection with the plurality of analog electrical chips for transceiving, and the on-chip optical switch being configured to alter the connection topology among the plurality of communication nodes; and a plurality of computing modules, which are arranged on the circuit board and, by means of the electrical connection paths on the circuit board, are in corresponding communication connection with the plurality of analog electrical chips for transceiving of the on-chip all-optical switching network module, so that the connection topology among the plurality of computing modules can be altered by the on-chip optical switch.

The invention relates to the technical field of power system safety monitoring, in particular to a power transmission line online safety monitoring method, system and device based on quantum communication and a storage medium. The multi-modal fusion sensor synchronously collects multi-parameter electric signal data such as current, voltage and temperature of the power transmission line, and performs quantum encryption instantaneous recording on the data; based on quantum encryption instantaneous record extraction data, a deep learning adaptive Kalman filtering algorithm is combined with a neural network to predict the operation state of the power transmission line; generating a new Manchester code according to the multi-parameter electric signal data and the operation state predicted value, and encrypting by adopting quantum key distribution to generate a ciphertext; and transmitting the ciphertext to a client based on a terahertz communication channel, decrypting and recovering the data through the quantum key, and carrying out safety early warning. Theoretically uncracked data security assurance is realized by using the unclonable characteristic of the quantum state, high-rate data transmission is realized by terahertz communication, and the transformation from passive monitoring to active early warning is realized by a prediction algorithm.

A control system for a network of quantum systems operates the network to perform quantum informatics processing. The control system includes an entanglement scheduler configured to identify operations for which entanglement of two or more of the quantum systems is desired, identify plural potential entanglement attempts for generating the entanglement; and schedule at least some of the potential entanglement attempts to be performed to generate the entanglement for at least one of the operations. The entanglement scheduler may use direct entanglement, entanglement swapping and / or quantum teleportation approaches to generate the entanglement. The entanglement scheduler may schedule probabilistic entanglement attempts based at least in part on the probability of success of the entanglement attempts. The entanglement scheduler may generate entanglement to support plural branches of a quantum informatics process and / or to respond to events occurring while the quantum informatics process is executing.

The invention discloses an on-chip optical interconnection and switching chip and an application system thereof. Wherein the on-chip optical interconnection and exchange chip is integrated by a power divider, a bidirectional optical transceiver unit and an optical switch unit; the application system of the on-chip optical interconnection and switching chip comprises a multi-wavelength light source used for generating multi-wavelength optical carrier signals, a transceiving unit control and clock module used for bidirectional transceiving unit feedback / amplifier control and clock synchronization, and an optical switching control module used for switching an optical switching unit switching link. The chips and the modules are used for realizing optical interconnection and optical switching of the special electrical computing chip ASIC. According to the invention, bidirectional optical interconnection and exchange of special computing electric chips such as a CPU, a GPU, a DPU and the like can be realized by utilizing an on-chip optical interconnection and exchange technology, the interconnection rate is high, the exchange switching time is short, computing power cluster networking oriented to artificial intelligence application can be supported, and the application prospect is good.

The invention provides an optical network resource allocation method based on feedback iteration fusion quantum and classical calculation, which comprises the following steps of: preprocessing optical network resources by applying a heuristic algorithm, and establishing a QUBO model of a corresponding resource allocation problem: taking candidate optical paths and candidate resource information as binary logic variables, and according to constraint conditions, establishing a QUBO model of a corresponding resource allocation problem; mapping the resource allocation scheme into Hamiltonian of different sizes; and in combination with a heuristic algorithm, solving the QUBO model in a special quantum computer, and carrying out post-processing to obtain a resource allocation scheme. According to the method, characteristics of classical calculation and quantum calculation are combined, so that a distribution scheme is effectively prevented from falling into local optimum; by using the parallel computing advantage of the special quantum computer, the decision time of resource allocation is reduced, the network is ensured to have relatively low long-term blocking rate and spectrum utilization rate, the requirement of quickly and efficiently solving the optical network resource allocation problem is met, and the method is suitable for popularization and application.

The invention provides a distributed quantum security encryption method, system and device. The method comprises the following steps: monitoring the quality of a quantum key distribution link in real time, and dynamically selecting a quantum key, a post-quantum session key or a fusion key of the quantum key and the post-quantum session key as a working key; and when the node cannot be directly reached, the trusted relay node generates an end-to-end key seed by using a quantum key and a post-quantum cryptography shared key which are respectively established with the two ends, the end-to-end key seed is encrypted and distributed by a public key and then a session key is independently derived by the two communication parties, and the relay node cannot decrypt. The system adopts a distributed Mesh network architecture supporting a terminal / relay dual mode. The device integrates a quantum random number generator, a post quantum cryptography coprocessor and a mixed key engine. The method integrates the advantages of quantum physical security and post quantum cryptography, has high security and availability, and is suitable for constructing a key infrastructure security communication network resisting quantum computing attack.

A Rydberg atom television receiver is disclosed. The receiver comprises a probe laser, a source polarizing beam displacer, a Rydberg atom receiver cell, receiver atoms, a detector polarizing beam displacer, a detector polarizing beam cube, a first photodiode, a second photodiode, a differential amplifier, a display, and a coupling laser. The receiver receives a modulated waveform imprinted on a radiofrequency carrier a displays a graphical representation corresponding to a modulation source.

Aspects of the subject disclosure may include, for example, receiving artificial intelligence (AI) analytics from a generative AI system, and based on the AI analytics, causing a software defined network (SDN) controller to identify a signaling path over a quantum signaling network, thereby enabling selection of a determined suitable path for quantum entanglement distribution. Other embodiments are disclosed.

A system-in-package includes: a photonic integrated circuit (PIC) including an active photonic component; and an electronic integrated circuit (EIC) stacked on the PIC, the EIC including: an electrical component electrically connected to a landing pad, and a copper pillar embedded in the landing pad and protruding from the landing pad that connects with the active photonic component such that the electrical component is electrically connected to the active photonic component. The landing pad has a larger surface area than a cross sectional area of the copper pillar, and wherein, when viewed from the EIC towards the PIC, the active photonic component on the PIC is offset from the landing pad of the EIC, wherein the offset is sufficient to keep a parasitic capacitance between the landing pad and the active photonic component within a pre-determined threshold level of tolerance.

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 belongs to the technical field of optical communication, and relates to an adaptive key pool and real-time key collaborative resource optimization method and device, and the method comprises the steps: generating a key on a time slot of a quantum signal channel between every two adjacent quantum nodes, and storing the key in a quantum key pool; generating a communication path for each service request, and when the service security level of the service request is the highest, generating a real-time key on a time slot of a quantum signal channel between every two adjacent quantum nodes in the communication path; when the service security level of the service request is enhanced, a key is obtained from a quantum key pool between every two adjacent quantum nodes in a communication path of the service request, and when the number of keys in the quantum key pool is smaller than the key demand quantity of the service request, the service security level of the service request is enhanced; a real-time key is generated on a time slot of a quantum signal channel between every two adjacent quantum nodes in a communication path; and when the service security level of the service request is based on the service security level, a key is acquired from a quantum key pool between every two adjacent quantum nodes in a communication path of the service request.

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 channel-associated local oscillator free space continuous variable quantum key distribution method, which comprises the following steps of: initializing a receiving end telescope and a transmitting end telescope, detecting the local oscillator light intensity of a receiving end, adjusting the telescopes to be in an optimal coupling efficiency state, and tracking the change of beacon light through a fine tracking and pointing system of the telescopes so as to maintain the stability of a communication link; a transmitting end performs heterodyne detection on 90% of thermal-state optical signals after polarization and beam splitting of a thermal-state light source, results X and P serve as local initial secret keys, the other 10% of thermal-state optical signals are attenuated and then combined with local oscillation light to be transmitted to a receiving end through a free space channel so as to perform homodyne or heterodyne detection, and corresponding initial continuous secret key data are obtained; and the receiving end performs data frame synchronization, phase compensation, parameter evaluation, error correction and confidentiality enhancement on the obtained initial continuous key data to obtain a binary bit key. The channel associated local oscillator free space CVQKD safe coding based on the thermal state source is realized, and the average key distribution rate under a-15dB attenuation channel reaches a thousand bps magnitude.

The invention discloses an AI-driven satellite ground station multi-module cooperative intelligent management and control method, and relates to the technical field of satellite communication and ground station management and control. The method comprises the following steps: carrying out global situation-resource portrait fusion, arranging multi-source nodes, carrying out 10ns-level TSN + PTP synchronization, generating a five-dimensional situation tensor containing dimensions such as space coordinates, and mapping computing power and bandwidth resources to form a dynamic coupling hypergraph; link-task double-axis hierarchical scheduling: based on the link health degree and the task importance, completing resource dynamic binding and matching in a millisecond level through three-level channels; a quantum-classical hybrid encryption assembly line is used for differentiated encryption according to a grading result to guarantee data security; carrying out dual-channel self-evolution prediction, constructing a network to predict link quality and task requirements, and compressing the link quality and task requirements into a lightweight model to pass back and schedule; closed-loop execution and toughness self-healing are carried out, an instruction is generated and issued, an execution effect is returned to update a model, and redundancy is degraded and minute-level recovery is carried out when a fault occurs; the resource utilization rate, the task completion rate and the system toughness are improved.

A key exchange system according to an aspect of the present disclosure includes: a plurality of quantum key distribution (QKD) apparatuses that executes a quantum key distribution protocol including at least error correction; and a plurality of hub apparatuses that performs encrypted communication with each other, in which each of the hub apparatuses includes a key generation unit configured to generate an encryption key for performing the encrypted communication with another hub apparatus based on information received from a corresponding one of the QKD apparatuses, and each of the QKD apparatuses includes a QKD processing unit configured to execute the quantum key distribution protocol with another QKD apparatus and generate a correction key from a ciphertext of random number information, and a first transmission unit configured to transmit information representing a result of basis reconciliation in the quantum key distribution protocol to a corresponding one of the hub apparatuses.

The invention discloses an optical fiber signal transmission system and method based on quantum noise encryption, and relates to the technical field of optical fiber communication, and the system comprises a composite modulation transmitting module, a dispersion compensation relay module, a coherent receiving module and a digital signal processor. The composite modulation transmitting module comprises an electro-optical modulator and a quantum noise randomization encoder; the dispersion compensation relay module comprises an adjustable dispersion compensator and a Raman amplifier; the coherent receiving module comprises a local oscillator laser and a 90-degree optical mixer; a digital signal processor includes a clock recovery unit and a maximum likelihood sequence detector. All the modules are sequentially connected and cooperatively work. And the adjustable dispersion compensator dynamically applies reverse dispersion compensation calculated based on a dispersion coefficient and a transmission distance according to the dispersion amount monitored in real time. According to the invention, through technologies of quantum noise encryption, dynamic dispersion compensation, Raman amplification, coherent reception and the like, safe and efficient transmission with single-wave 400Gbps and 100km transmission bit error rate less than or equal to 1 * 10 <-12 > is realized.

The invention belongs to the technical field of credible time, and particularly discloses a credible time source device and an implementation method and application thereof, and the credible time source device comprises a network management system and time source equipment which integrates a satellite signal identification module, an optical fiber signal identification module, an equipment identity identification module, a fault monitoring service stopping module, a time information encryption module and a time heaven and earth mutual backup module. Through multi-module cooperation and full-process management and control of a network management system, time signal authenticity identification, equipment identity authentication, encrypted transmission, fault monitoring and space-ground mutual backup switching are realized. The trusted time source implementation method comprises the steps of time signal identification, identity authentication solidification and the like. The credible time source device provided by the invention is applied to the fields of data right confirmation, finance, electric power, block chains and the like, solves the five defects that the authenticity of a traditional time source signal is not identified, and equipment is easy to counterfeit, improves the credibility and stability of time service, and has important technical value and wide application prospect.

The invention relates to optical fiber channel security detection, in particular to an optical transport network equipment channel security detection system and method based on quantum measurement and an optical time domain quantum detection device, which are used for carrying out signal detection with high spatial resolution and large dynamic range based on quantum measurement and realizing high-precision sensing of multi-dimensional parameters of an optical fiber channel. The main control software is applied to realize equipment control, data processing and analysis based on an artificial intelligence algorithm and application layer communication; the optical transport network equipment performs information interaction with the application master control software through the management and control system and executes a corresponding security policy; the wave combination control module is used for carrying out beam combination on the optical signal output by the optical time domain quantum detection device and a service signal output by the optical transport network equipment, entering an optical fiber channel and controlling to switch a detection line; according to the technical scheme, the defects that high-spatial-resolution and large-dynamic-range signal detection is difficult to carry out, and accurate event type judgment and high-precision spatial discrimination cannot be carried out on tiny loss events can be overcome.

A system-in-package includes: a photonic integrated circuit (PIC) including an active photonic component; and an electronic integrated circuit (EIC) stacked on the PIC, the EIC including: an electrical component electrically connected to a landing pad, and a copper pillar embedded in the landing pad and protruding from the landing pad that connects with the active photonic component such that the electrical component is electrically connected to the active photonic component. The landing pad has a larger surface area than a cross sectional area of the copper pillar, and wherein, when viewed from the EIC towards the PIC, the active photonic component on the PIC is offset from the landing pad of the EIC, wherein the offset is sufficient to keep a parasitic capacitance between the landing pad and the active photonic component within a pre-determined threshold level of tolerance.

The classical channel employs a transmit laser and classical modulator. The quantum channel employs a nonlinear medium and spontaneous parametric down conversion producing quantum entangled signal and idler photon pairs which are encoded. The classical and quantum channels are combined to define a propagated hybrid signal. The receiver splits the hybrid signal on basis of wavelength into classical and quantum channels. The quantum receiver employs optical parametric amplification, supplied with energy from a second harmonic generation device synchronized to the classical carrier wavelength. A photodetector and extracts a quantum message from the quantum signal.