Title:
METHOD FOR SINGLE-PHOTON PAIR-BASED ONE-WAY AND ONE-STEP QUANTUM DIRECT COMMUNICATION, AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/238972
Kind Code:
A1
Abstract:
The present specification provides a method for a transmitter to transmit information through a quantum channel in a quantum direct communication system. More specifically, the method comprises the steps of: generating a single-photon pair associated with polarization coding for transmitting information; generating a transmission information sequence including (i) a message sequence related to the information and (ii) a checking sequence related to quantum bit error rate (QBER) estimation for determining eavesdropping on a quantum channel, wherein the checking sequence is randomly inserted between sequence elements of the message sequence; performing one of (i) encryption and (ii) randomization on the information sequence; transmitting, to a receiver, the single-photon pair including quantum information that is generated on the basis of the polarization coding for the information sequence to which one of (i) the encryption and (ii) the randomization has been applied, on the quantum channel; performing the QBER estimation with the receiver; and transmitting, to the receiver, information for restoring the information sequence to which one of (i) the encryption and (ii) the randomization has been applied, on the basis of a result of the QBER estimation.
Inventors:
AHN BYUNGKYU (KR)
LEE SANGRIM (KR)
LEE HOJAE (KR)
KIM JAYEONG (KR)
LEE SANGRIM (KR)
LEE HOJAE (KR)
KIM JAYEONG (KR)
Application Number:
PCT/KR2022/008237
Publication Date:
December 14, 2023
Filing Date:
June 10, 2022
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04B10/70; H04B10/079; H04B10/85; H04L9/08
Foreign References:
| US20190238326A1 | 2019-08-01 | |||
| CN113824510A | 2021-12-21 |
Other References:
SHENG YU-BO, ZHOU LAN, LONG GUI-LU: "One-step quantum secure direct communication", SCIENCE BULLETIN, ZHONGGUO KEXUE ZAZHISHE, CN, vol. 67, no. 4, 1 February 2022 (2022-02-01), CN , pages 367 - 374, XP093114470, ISSN: 2095-9273, DOI: 10.1016/j.scib.2021.11.002
ZISU LILIANA: "Quantum High Secure Direct Communication with Authentication", 2020 13TH INTERNATIONAL CONFERENCE ON COMMUNICATIONS (COMM), IEEE, 18 June 2020 (2020-06-18), pages 129 - 132, XP033795453, DOI: 10.1109/COMM48946.2020.9142030
YANG LU; WU JIAWEI; LIN ZAISHENG; YIN LIUGUO; LONG GUILU: "Quantum secure direct communication with entanglement source and single-photon measurement", SCIENCE CHINA PHYSICS, MECHANICS, SCIENCE CHINA PRESS, BEIJING, vol. 63, no. 11, 25 August 2020 (2020-08-25), Beijing, XP037231025, ISSN: 1674-7348, DOI: 10.1007/s11433-020-1576-y
ZISU LILIANA: "Quantum High Secure Direct Communication with Authentication", 2020 13TH INTERNATIONAL CONFERENCE ON COMMUNICATIONS (COMM), IEEE, 18 June 2020 (2020-06-18), pages 129 - 132, XP033795453, DOI: 10.1109/COMM48946.2020.9142030
YANG LU; WU JIAWEI; LIN ZAISHENG; YIN LIUGUO; LONG GUILU: "Quantum secure direct communication with entanglement source and single-photon measurement", SCIENCE CHINA PHYSICS, MECHANICS, SCIENCE CHINA PRESS, BEIJING, vol. 63, no. 11, 25 August 2020 (2020-08-25), Beijing, XP037231025, ISSN: 1674-7348, DOI: 10.1007/s11433-020-1576-y
Attorney, Agent or Firm:
ROYAL PATENT & LAW OFFICE (KR)
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