Experimental demonstration on the deterministic quantum key distribution based on entangled photons

Hua Chen; Zhi-Yuan Zhou; Alaa Jabbar Jumaah Zangana; Zhen-Qiang Yin; Juan Wu; Yun-Guang Han; Shuang Wang; Hong-Wei Li; De-Yong He; Shelan Khasro Tawfeeq; Bao-Sen Shi; Guang-Can Guo; Wei Chen; Zheng-Fu Han

doi:10.1038/srep20962

Experimental demonstration on the deterministic quantum key distribution based on entangled photons

Sci Rep. 2016 Feb 10:6:20962. doi: 10.1038/srep20962.

Authors

Hua Chen^{1

2}, Zhi-Yuan Zhou^{1

2}, Alaa Jabbar Jumaah Zangana³, Zhen-Qiang Yin^{1

2}, Juan Wu^{1

2}, Yun-Guang Han^{1

2}, Shuang Wang^{1

2}, Hong-Wei Li^{1

2}, De-Yong He^{1

2}, Shelan Khasro Tawfeeq³, Bao-Sen Shi^{1

2}, Guang-Can Guo^{1

2}, Wei Chen^{1

2}, Zheng-Fu Han^{1

2}

Affiliations

¹ Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.
² Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
³ Institute of Laser for Postgraduate Studies, University of Baghdad, Baghdad, Iraq.

Abstract

As an important resource, entanglement light source has been used in developing quantum information technologies, such as quantum key distribution(QKD). There are few experiments implementing entanglement-based deterministic QKD protocols since the security of existing protocols may be compromised in lossy channels. In this work, we report on a loss-tolerant deterministic QKD experiment which follows a modified "Ping-Pong"(PP) protocol. The experiment results demonstrate for the first time that a secure deterministic QKD session can be fulfilled in a channel with an optical loss of 9 dB, based on a telecom-band entangled photon source. This exhibits a conceivable prospect of ultilizing entanglement light source in real-life fiber-based quantum communications.

Publication types

Research Support, Non-U.S. Gov't