System integrating quantum secure direct communication and time-sensitive network

Abstract

The invention discloses a system integrating quantum secure direct communication and a time-sensitive network, and relates to the technical field of time-sensitive networks. To provide a solution for high security, low latency communications in an infrastructure system; comprising a quantum entanglement source module used for generating and distributing entanglement photon pairs; the quantum channel module is used for safely transmitting quantum states; and the TSN infrastructure module is used for ensuring that the data packets are transmitted in a specified time window with low delay. The advanced QSDC technology is adopted, is an encryption mode based on the quantum physics principle and has the quantum computing attack resisting capacity, and compared with traditional encryption algorithms such as the AES technology, the RSA technology and the QSDC technology, the long-term safety of information can be guaranteed. Any behavior trying to eavesdrop disturbs the quantum state, so that the behavior is detected by the system, a powerful eavesdrop detection function is provided, and it is ensured that no unauthorized eavesdrop or tampering exists in the data transmission process.

Description

Technical Field

[0001] The present invention relates to the technical field of time-sensitive networks, and in particular to a system integrating quantum secure direct communication and time-sensitive networks. Background Art

[0002] Among existing technologies, quantum communication has attracted much attention in recent years due to its potential to provide ultra-secure communication systems. Quantum key distribution (QKD), as the most widely studied and applied quantum communication protocol, uses the principles of quantum mechanics to ensure the secure exchange of encryption keys and effectively prevent eavesdropping and hacker attacks. However, QKD has limitations in some applications. For example, key exchange may introduce delays, affecting application scenarios with high real-time requirements.

[0003] Quantum Secure Direct Communication (QSDC), as an emerging quantum communication protocol, overcomes some of the challenges of QKD. Unlike QKD, QSDC allows information to be transmitted directly through quantum channels without the need for key generation and exchange, making it more effective in scenarios that require instant secure communication. One potential application area for QSDC is Time Sensitive Networking (TSN), a set of IEEE standards designed to provide deterministic and low-latency data transmission for real-time applications such as power grids, industrial automation, and transportation networks.

[0004] However, the existing technology has shortcomings. Although the classic TSN technology can provide real-time communication services, it has potential risks in information security, especially in the face of future quantum attacks. At the same time, its delay processing is also limited and cannot meet the requirements of extreme real-time performance. On the other hand, although QKD provides high security, its key exchange process will introduce delays, affecting the real-time performance of data. In addition, QKD also needs to rely on specialized quantum communication hardware, which increases the complexity and cost of the system. In long-distance transmission, the stability and fidelity of quantum signals are also difficult to maintain;

[0005] In order to overcome these defects, the present invention proposes a system integrating QSDC and TSN. The system uses QSDC technology to directly perform encrypted communication through quantum channels, avoiding the key distribution process, thereby solving the delay problem in TSQKD technology. At the same time, TSN provides guarantee for real-time data transmission, ensuring that quantum communication can maintain a high degree of security while meeting the low latency requirements. Through the combination of QSDC and TSN, the present invention can improve the real-time performance of data transmission and system efficiency while ensuring quantum-level security, meeting the dual needs of modern application scenarios.

[0006] Specifically, QSDC technology significantly reduces the system's dependence on dedicated quantum communication hardware, reduces hardware complexity and cost, and makes system deployment and maintenance easier and more efficient. In addition, QSDC directly transmits information through quantum states, avoiding the relay and key exchange process in traditional quantum key distribution, reducing the attenuation and noise effects of quantum signals, and making the system more feasible in quantum communications over longer distances. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a system integrating quantum secure direct communication and time-sensitive network.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A system integrating quantum secure direct communication and time-sensitive networking, comprising:

[0010] Quantum entanglement source module, used to generate and distribute entangled photon pairs;

[0011] Quantum channel module, used for secure transmission of quantum states;

[0012] TSN infrastructure module to ensure data packets are transmitted with low latency within a specified time window;

[0013] Synchronization device module, used to achieve accurate time synchronization between the sender (Alice) and the receiver (Bob);

[0014] Control and management system module for system configuration, monitoring and management;

[0015] Quantum-classical fusion gateway module, used to realize data format and protocol conversion between quantum channels and classical TSN networks;

[0016] The quantum state post-processing unit module is used to purify and optimize the quantum state after transmission.

[0017] Preferably: the quantum entanglement source module includes:

[0018] Nonlinear optical crystals for generating multi-wavelength entangled photon pairs;

[0019] An electro-optic modulator, used to dynamically adjust the entangled state parameters according to the network load;

[0020] Quantum memory, for temporarily storing unused entangled photon pairs;

[0021] Feedback loop for real-time monitoring of entangled state quality and automatic adjustment of pump laser power and phase matching conditions.

[0022] Further: the quantum channel module includes:

[0023] A hybrid architecture of optical fiber and free-space channels for dynamically switching transmission media based on environmental conditions;

[0024] Quantum repeaters are used to extend communication distances through entanglement purification and exchange technology in long-distance transmission;

[0025] Quantum error-correcting codes (such as Shor codes), which are used to protect quantum states in transit from noise and interference;

[0026] Quantum state tomography module for real-time assessment of channel quality and triggering adaptive optimization strategies.

[0027] Further: The TSN infrastructure module includes:

[0028] A dedicated queue to assign the highest transmission priority to quantum encrypted data;

[0029] Dynamic bandwidth allocation algorithm to adjust TSN time slot allocation according to quantum data traffic;

[0030] Time-sensitive routing strategy to minimize end-to-end delay;

[0031] A fault self-healing mechanism is used to automatically switch to an alternative path and reallocate time slots when a node failure is detected.

[0032] As a preferred solution of the present invention: the synchronization device module includes:

[0033] A clock synchronization protocol based on quantum entanglement for achieving sub-nanosecond time alignment;

[0034] Master-slave clock architecture, used to achieve a unified time base for multiple nodes in a distributed network;

[0035] Adaptive synchronization compensation mechanism, used to dynamically adjust synchronization parameters according to network delay fluctuations.

[0036] As a further solution of the present invention: the control and management system module includes:

[0037] Graphical interface for system configuration, status monitoring and fault diagnosis;

[0038] Distributed control architecture for deploying local controllers at the edge of the network for fast response;

[0039] AI-driven optimization engine for dynamically optimizing system parameters;

[0040] Security audit function, used to record operation logs and support attack tracing.

[0041] As a further solution of the present invention: the quantum-classical fusion gateway module includes:

[0042] Protocol conversion unit, used to achieve data format and protocol compatibility conversion between quantum channels and classical TSN networks;

[0043] Hardware-level isolation technology to prevent information leakage between quantum channels and classical channels;

[0044] Quantum state compression technology is used to reduce transmission bandwidth requirements without losing information;

[0045] Hybrid encryption mechanism is used to combine QSDC with classic encryption algorithms (such as AES) to achieve multi-level security protection.

[0046] Based on the above solution: the quantum state post-processing unit module includes:

[0047] Entangled state purification module, used to eliminate noise and distortion of quantum states after transmission;

[0048] Adaptive measurement basis selection strategy to improve the efficiency of quantum state decoding;

[0049] A real-time feedback control mechanism to dynamically adjust quantum state generation and transmission parameters based on measurement results;

[0050] Multi-user sharing mechanism is used to support multiple receivers sharing the same entangled state resources.

[0051] Based on the above solution: the system is suitable for scenarios with high security and low latency requirements such as smart grid, industrial automation, and financial communications, including:

[0052] In smart grids, it is used to transmit power demand, fault detection and operating status data in real time;

[0053] In industrial automation, it is used to achieve safe transmission of high-precision control instructions;

[0054] In financial communications, it is used to protect transaction data from quantum computing attacks.

[0055] Based on the above scheme: the following steps are included:

[0056] Generate and distribute entangled photon pairs through quantum entanglement source module;

[0057] Use the QSDC protocol to encode information into quantum states and transmit it through the quantum channel module;

[0058] Ensure quantum encrypted data is transmitted with low latency within a specified time window through TSN infrastructure modules;

[0059] Use the synchronization device module to achieve accurate time synchronization between the sender and the receiver;

[0060] Data conversion between quantum channels and classical TSN networks is achieved through the quantum-classical fusion gateway module;

[0061] Purify and optimize the transmitted quantum state through the quantum state post-processing unit module;

[0062] Monitor and optimize system operation status through the control and management system module.

[0063] The beneficial effects of the present invention are:

[0064] 1. A system that integrates quantum secure direct communication and time-sensitive networking, using advanced QSDC technology, which is an encryption method based on the principles of quantum physics and has the ability to resist quantum computing attacks. Compared with traditional encryption algorithms such as AES and RSA, QSDC technology can ensure the long-term security of information. Any attempt to eavesdrop will disturb the quantum state and be detected by the system, which provides a powerful eavesdropping detection function to ensure that there is no unauthorized eavesdropping and tampering during data transmission.

[0065] 2. A system integrating quantum secure direct communication and time-sensitive network. The QSDC technology avoids the key exchange delay in traditional quantum key distribution (TSQKD) technology by directly transmitting encrypted quantum information. In addition, combined with the time-sensitive network (TSN) technology, the system can ensure real-time transmission and priority scheduling of data and achieve low-latency data transmission. This feature makes the present invention particularly suitable for application scenarios that require low latency and high efficiency, such as power grids, industrial automation, and intelligent transportation.

[0066] 3. A system that integrates quantum secure direct communication and time-sensitive networks. QSDC technology does not rely on complex key exchange equipment and relay stations, which significantly reduces the system's hardware requirements and maintenance costs. At the same time, it simplifies the communication process, reduces frequent key exchange and synchronization steps, and makes the system more concise and efficient, which is conducive to the promotion and deployment of large-scale networks.

[0067] 4. A system integrating quantum secure direct communication and time-sensitive network has strong anti-interference ability. Even when transmitted in a complex network, the quantum signal can maintain a high stability. In addition, by utilizing quantum entanglement, the QSDC system maintains high fidelity during information transmission, further improving the reliability and transmission quality of the system, which enables the present invention to maintain excellent performance even in long-distance transmission.

[0068] 5. A system that integrates quantum secure direct communication and time-sensitive networks is suitable for a variety of application scenarios, including power grids, industrial control systems, financial transactions, and medical health. It provides high-security and low-latency quantum communication solutions that can meet the needs of different fields. At the same time, the system has strong scalability and can support larger-scale network deployment and high-frequency data transmission as communication needs increase.

[0069] 6. A system integrating quantum secure direct communication and time-sensitive network. The security mechanism based on quantum communication can ensure that communication remains reliable in the post-quantum era. In addition, the quantum secure communication technology it adopts lays the foundation for the development of quantum Internet. It can be compatible with future quantum network architecture and expanded to a larger-scale global quantum communication network. This makes the present invention have broad application prospects in the field of quantum communication in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 It is a module diagram of a system integrating quantum secure direct communication and time-sensitive network proposed by the present invention;

[0071] Figure 2 This is a flow chart of a system integrating quantum secure direct communication and time-sensitive network proposed by the present invention. DETAILED DESCRIPTION

[0072] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0073] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0074] Embodiment 1:

[0075] A system integrating quantum secure direct communication and time-sensitive networking, such as Figure 1 to Figure 2 As shown, Quantum Secure Direct Communication (QSDC) is a quantum communication protocol that allows encrypted information to be transmitted directly over a quantum channel without the need for classical key exchange. Unlike Quantum Key Distribution (QKD), which relies on the exchange of cryptographic keys between communicating parties, QSDC achieves secure transmission of information by encoding the information directly into quantum states, usually in the form of quantum bits (qubits);

[0076] QSDC operates on the principles of quantum entanglement and quantum superposition. In QSDC, information is encoded into quantum states, such as the polarization state of photons or quantum entangled pairs. These states can be measured without revealing the actual information unless an authorized recipient performs a specific quantum measurement. Importantly, any unauthorized attempt to intercept or measure the quantum state will interfere with the system, alerting the communicating parties to potential eavesdropping - a unique feature of quantum communication.

[0077] A key method used in QSDC is a communication method based on quantum entanglement, in which two remote parties (Alice and Bob) share an entangled quantum state. The sender Alice encodes information by manipulating that half of the entangled quantum state. Bob, after receiving his half of the entangled pair, can decode the information with high confidence. This process ensures the security of communication because any interference with the quantum channel will destroy the entangled state, alerting the sender and receiver to potential security threats.

[0078] The proposed QSDC-TSN system includes:

[0079] Quantum entanglement source module

[0080] Generate entangled photon pairs for QSDC, which will be distributed between the sender (Alice) and the receiver (Bob) as the basis for information transmission; use nonlinear optical crystals (such as PPKTP) to generate multi-wavelength entangled photon pairs, support multi-channel parallel transmission, and improve communication capacity; integrate electro-optic modulators to dynamically adjust entangled state parameters (such as entanglement degree, wavelength) according to network load to optimize resource utilization; introduce quantum memory to temporarily store unused entangled photon pairs, reduce resource waste and improve system response speed; monitor the quality of the entangled state in real time through a built-in feedback loop, automatically adjust the pump laser power and phase matching conditions to ensure the stability of the entangled state;

[0081] Quantum channel module

[0082] It is used to securely transmit quantum states, which can be optical fiber or free-space quantum channels, which ensure the integrity and confidentiality of quantum information; it combines optical fiber and free-space channels to dynamically switch transmission media according to environmental conditions to enhance system robustness; it deploys quantum repeaters in long-distance transmission and extends communication distances through entanglement purification and exchange technology; it uses quantum error correction codes (such as Shor codes) to protect quantum states in transmission and resist channel noise and interference; it integrates quantum state tomography modules to evaluate channel quality in real time and trigger adaptive optimization strategies;

[0083] TSN infrastructure modules

[0084] TSN-enabled devices, such as switches and routers, ensure that data packets (including quantum encrypted information) are transmitted with the required accuracy within a specified time window; design dedicated queues in TSN switches to assign the highest transmission priority to quantum encrypted data to ensure low latency; dynamically adjust TSN time slot allocation based on quantum data traffic to optimize resource utilization of classical and quantum channels; design time-sensitive routing strategies based on network topology and quantum data characteristics to minimize end-to-end latency; automatically switch to backup paths and reallocate time slots when a TSN node failure is detected to ensure system reliability;

[0085] Synchronous device module

[0086] Used for precise time synchronization between Alice and Bob, ensuring that the quantum state is correctly decoded and meets the time constraints of TSN; using a clock synchronization protocol based on quantum entanglement to achieve sub-nanosecond time alignment between Alice and Bob; in a distributed network, a unified time base for multiple nodes is achieved through a master-slave clock architecture; using the correlation characteristics of entangled photon pairs to eliminate the cumulative error in classical synchronization and improve synchronization accuracy; dynamically adjusting synchronization parameters according to network delay fluctuations to ensure long-term stability;

[0087] Control and management system module

[0088] Responsible for the configuration, monitoring and management of the entire system to ensure the stable operation of the system; provide a graphical interface to support system configuration, status monitoring and fault diagnosis; deploy local controllers at the edge of the network to achieve rapid response and load balancing; use machine learning algorithms to analyze network traffic and quantum state quality, and dynamically optimize system parameters (such as entanglement state generation rate, TSN time slot allocation); record the operation logs of quantum channels and TSN networks to support post-analysis and attack tracing;

[0089] Quantum-Classical Fusion Gateway Module

[0090] Realize the compatibility conversion of data formats and protocols between quantum channels and classical TSN networks; prevent information leakage between quantum channels and classical channels through hardware-level isolation technology; compress quantum state data without losing information to reduce transmission bandwidth requirements; combine QSDC with classical encryption algorithms (such as AES) to achieve multi-level security protection;

[0091] Quantum state post-processing unit module

[0092] The quantum state after transmission is purified to eliminate noise and distortion. An adaptive measurement basis selection strategy is adopted to improve the efficiency of quantum state decoding. The quantum state generation and transmission parameters are dynamically adjusted according to the measurement results to achieve closed-loop optimization. Multiple receivers are supported to share the same entangled state resources to improve system utilization.

[0093] Embodiment 2:

[0094] A system integrating quantum secure direct communication and time-sensitive network. This embodiment is used as an example of an application scenario, and the example project is smart grid secure communication:

[0095] One potential application of the QSDC-TSN integrated system is the smart grid, which requires high security and low latency communications to ensure real-time control and protection of the power system. Smart grid is an important part of modern energy infrastructure, and efficient power distribution, generation management, and immediate response to faults and attacks are critical to the stability and reliability of the system.

[0096] 1: Scenario Introduction

[0097] In a smart grid, communication between various components such as power stations, substations, and remote control centers is key to monitoring the health of the grid, optimizing energy distribution, and detecting faults. The communication network needs to be highly secure to prevent cyber attacks and data leaks that could disrupt grid operations, but it must also operate in real time to make quick decisions based on fluctuating power demand and potential failures;

[0098] Key requirements for smart grids:

[0099] Real-time communication: Power systems must react almost instantly to dynamic changes in power demand and faults. For example, if a fault is detected in the grid, immediate action must be taken to reroute power and prevent system failure.

[0100] High security: Smart grids are vulnerable to cyberattacks that could compromise the entire system. Ensuring the privacy and integrity of communications between smart meters, substations, and central control systems is critical.

[0101] Low latency: Time-sensitive data, such as power demand, fault detection, and operating status, needs to be transmitted with minimal delay to enable a quick response.

[0102] 2: Application of QSDC-TSN in Smart Grid

[0103] In this scenario, the QSDC-TSN system is used to securely protect the communications between the various components of the smart grid, ensuring the quantum security and real-time requirements of the transmitted data.

[0104] Quantum Secure Direct Communication (QSDC) is used to ensure that data exchanged between power grid components (e.g., substations, smart meters, and control centers) is encrypted and secure. Because QSDC directly transmits quantum-encoded information without the need for key exchange, it offers significant advantages over traditional cryptographic systems that rely on secure key distribution. Any attempt to intercept or measure quantum communication immediately destroys the quantum state, alerting the system to potential eavesdropping or tampering.

[0105] TSN (Time-Sensitive Networking) ensures low latency and high accuracy in data transmission. For example, if there is a problem with the power grid, such as a sudden increase in demand or a failure in a specific area, TSN can ensure that data about the failure or change is quickly delivered to the relevant control center, which can make decisions in real time to stabilize the power grid. TSN can also prioritize time-sensitive information (such as power grid operating conditions or emergency alerts), ensuring that this data can be transmitted without delay even when other non-critical data is being transmitted.

[0106] 3: How the QSDC-TSN system works in this scenario

[0107] 1. Data collection: Sensors and smart meters collect real-time data on energy consumption, voltage levels, and potential faults within the grid;

[0108] 2. Quantum data encryption: Use QSDC to securely transmit data. The encryption is based on quantum entanglement, so the data cannot be intercepted or tampered with by unauthorized parties without detection;

[0109] 3. Real-time transmission via TSN: The TSN network ensures that quantum-encrypted data is transmitted to the central control system with minimal delay. The control system can then take immediate action based on the received data, such as rerouting power or activating backup systems;

[0110] 4. Fault detection and response: When a fault occurs in the power grid (such as a short circuit or equipment failure), the TSN network ensures that the alarm information is quickly transmitted to the control center. The system can then process the data and respond within milliseconds to prevent large-scale outages or further damage to the infrastructure;

[0111] 5. Security monitoring: Continuous monitoring of the quantum communication system allows detection of any interference or potential eavesdropping attempts. When an attack is detected, the system alerts the operator and resets the communication channel to ensure safe operation;

[0112] QSDC ensures that all communications within the grid are quantum encrypted, providing a level of security that is impervious to classical decryption methods, including future quantum computing attacks;

[0113] Reduced latency: With TSN, real-time data, such as power usage or fault alerts, is transmitted with minimal latency, enabling operators to make decisions faster and more efficiently.

[0114] Improved grid stability: The combination of QSDC’s quantum encryption and TSN’s low-latency communications ensures that the grid remains stable and secure even during periods of high demand or emergencies;

[0115] Scalability: As the smart grid expands and more sensors and devices are added, the QSDC-TSN system can scale to accommodate the increased data flow while maintaining high security and performance.

[0116] The above is a preferred specific implementation manner of the present invention, and the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the field within the technical scope disclosed by the present invention in combination with the prior art or public common sense, within the spirit and principle of the present invention, shall be covered by the protection scope of the present invention.

Claims

1. A system integrating quantum secure direct communication and time-sensitive network, characterized in that: include: Quantum entanglement source module, used to generate and distribute entangled photon pairs; Quantum channel module, used for secure transmission of quantum states; TSN infrastructure module to ensure data packets are transmitted with low latency within a specified time window; Synchronization device module, used to achieve accurate time synchronization between the sender (Alice) and the receiver (Bob); Control and management system module for system configuration, monitoring and management; Quantum-classical fusion gateway module, used to realize data format and protocol conversion between quantum channels and classical TSN networks; The quantum state post-processing unit module is used to purify and optimize the quantum state after transmission.

2. A system integrating quantum secure direct communication and time-sensitive network according to claim 1, characterized in that: The quantum entanglement source module comprises: Nonlinear optical crystals for generating multi-wavelength entangled photon pairs; An electro-optic modulator, used to dynamically adjust the entangled state parameters according to the network load; Quantum memory, for temporarily storing unused entangled photon pairs; Feedback loop for real-time monitoring of entangled state quality and automatic adjustment of pump laser power and phase matching conditions.

3. A system integrating quantum secure direct communication and time-sensitive network according to claim 2, characterized in that: The quantum channel module comprises: A hybrid architecture of optical fiber and free-space channels for dynamically switching transmission media based on environmental conditions; Quantum repeaters are used to extend communication distances through entanglement purification and exchange technology in long-distance transmission; Quantum error-correcting codes (such as Shor codes), which are used to protect quantum states in transit from noise and interference; Quantum state tomography module for real-time assessment of channel quality and triggering adaptive optimization strategies.

4. A system integrating quantum secure direct communication and time-sensitive network according to claim 3, characterized in that: The TSN infrastructure module includes: A dedicated queue to assign the highest transmission priority to quantum encrypted data; Dynamic bandwidth allocation algorithm to adjust TSN time slot allocation according to quantum data traffic; Time-sensitive routing strategy to minimize end-to-end delay; A fault self-healing mechanism is used to automatically switch to an alternative path and reallocate time slots when a node failure is detected.

5. A system integrating quantum secure direct communication and time-sensitive network according to claim 4, characterized in that: The synchronization device module comprises: A clock synchronization protocol based on quantum entanglement for achieving sub-nanosecond time alignment; Master-slave clock architecture, used to achieve a unified time base for multiple nodes in a distributed network; Adaptive synchronization compensation mechanism, used to dynamically adjust synchronization parameters according to network delay fluctuations.

6. A system integrating quantum secure direct communication and time-sensitive network according to claim 5, characterized in that: The control and management system module includes: Graphical interface for system configuration, status monitoring and fault diagnosis; Distributed control architecture for deploying local controllers at the edge of the network for fast response; AI-driven optimization engine for dynamically optimizing system parameters; Security audit function, used to record operation logs and support attack tracing.

7. A system integrating quantum secure direct communication and time-sensitive network according to claim 6, characterized in that: The quantum-classical fusion gateway module includes: Protocol conversion unit, used to achieve data format and protocol compatibility conversion between quantum channels and classical TSN networks; Hardware-level isolation technology to prevent information leakage between quantum channels and classical channels; Quantum state compression technology is used to reduce transmission bandwidth requirements without losing information; Hybrid encryption mechanism is used to combine QSDC with classic encryption algorithms (such as AES) to achieve multi-level security protection.

8. A system integrating quantum secure direct communication and time-sensitive network according to claim 7, characterized in that: The quantum state post-processing unit module comprises: Entangled state purification module, used to eliminate noise and distortion of quantum states after transmission; Adaptive measurement basis selection strategy to improve the efficiency of quantum state decoding; A real-time feedback control mechanism to dynamically adjust quantum state generation and transmission parameters based on measurement results; Multi-user sharing mechanism is used to support multiple receivers sharing the same entangled state resources.

9. A system integrating quantum secure direct communication and time-sensitive network according to claim 8, characterized in that: The system is suitable for scenarios with high security and low latency requirements such as smart grid, industrial automation, and financial communications, including: In smart grids, it is used to transmit power demand, fault detection and operating status data in real time; In industrial automation, it is used to achieve safe transmission of high-precision control instructions; In financial communications, it is used to protect transaction data from quantum computing attacks.

10. A system integrating quantum secure direct communication and time-sensitive network according to claim 9, characterized in that: The following steps are involved: Generate and distribute entangled photon pairs through quantum entanglement source module; Use the QSDC protocol to encode information into quantum states and transmit it through the quantum channel module; Ensure quantum encrypted data is transmitted with low latency within a specified time window through TSN infrastructure modules; Use the synchronization device module to achieve accurate time synchronization between the sender and the receiver; Data conversion between quantum channels and classical TSN networks is achieved through the quantum-classical fusion gateway module; Purify and optimize the transmitted quantum state through the quantum state post-processing unit module; Monitor and optimize system operation status through the control and management system module.

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