US20260189388
2026-07-02
Electricity
H04L9/321
The patent application discusses a system and method for enhancing quantum communication through quantum state modulation based on quantum authentication. This approach is designed to address vulnerabilities in current encryption systems that could be exploited by quantum computers. The innovation focuses on reducing the number of qubits required for authentication and improving the detection of potential eavesdroppers, thereby safeguarding the preshared key information.
As quantum computers become more capable, they pose a threat to traditional encryption methods like RSA and AES, which rely on mathematical complexity. Quantum cryptography is proposed as a solution to this challenge. The discussed method aims to enhance quantum authentication by using symmetric M-order quantum state modulation (M-QSM). This method not only reduces the required qubits for authentication headers but also increases the ability to detect unauthorized access attempts, known as "Eve," and minimizes information leakage.
The solution involves a method for two devices in a quantum communication system to communicate securely. The first device sends information about the modulation order and an encoding method to the second device. It then generates a quantum state using a shared authentication code and key, transmitting a message with a quantum authentication header. The second device responds with a feedback message, allowing the first device to measure the quantum bit error rate (QBER) and determine authentication. Based on this, an acknowledgment or non-acknowledgment message is sent back.
Both devices in the system are equipped with transceivers and processors. The processors are responsible for handling the transmission of modulation order information and encoding methods, generating quantum states, and managing authentication headers. They also perform QBER measurements by comparing authentication codes. Depending on the results, the devices can authenticate each other and communicate the outcome through acknowledgment messages.
The system's functionality can be implemented via non-transitory computer-readable media containing instructions executable by processors. These instructions enable the communication and authentication processes, ensuring secure quantum communication between devices. The approach leverages symmetric M-order quantum state modulation to enhance security and efficiency in quantum communication systems.