Quantum communication method based on HHL algorithm

• Main Authors: JIANG YANGYANG, HUA XIAOYU, ZHU YONGHAO, FU YOU, YANG XIAOLONG, ZHOU JIE, ZHOU RANG, TANG XIAOCHUAN, LI DONGFEN, TAN YUQIAO
• Format: Patent
• Language: Chinese; English
• Published: 04.08.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a quantum communication method based on an HHL algorithm, relates to the technical field of quantum communication, and aims to ensure that information of both communication parties cannot be stolen by a third party by combining the HHL algorithm and utilizing a mode of solving a quantum linear equation when both communication parties want to transmit own classical information to each other. And the HHL quantum circuit constructed by the scheme is combined with the SWAP-TEST gate, and a solution result is calculated by calculating fidelity instead of directly measuring the result, so that the solution speed can be improved. By combining the HHL algorithm and the SWAP-TEST line, an improved quantum dialogue scheme is realized, and the scheme has the characteristics of high security and high transmission efficiency; according to the method, attacks under measurement retransmission, interception retransmission and extreme conditions can be resisted, and the transmission efficiency is very