title: Experimental demonstration on the deterministic quantum key distribution based on entangled photons.
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.
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Hua
authors: H
authors: Chen
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Zhi-Yuan
authors: ZY
authors: Zhou
authors: Institute of Laser for Postgraduate Studies, University of Baghdad, Baghdad, Iraq.
authors: Alaa Jabbar Jumaah
authors: AJ
authors: Zangana
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Zhen-Qiang
authors: ZQ
authors: Yin
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Juan
authors: J
authors: Wu
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Yun-Guang
authors: YG
authors: Han
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Shuang
authors: S
authors: Wang
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Hong-Wei
authors: HW
authors: Li
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: De-Yong
authors: DY
authors: He
authors: Institute of Laser for Postgraduate Studies, University of Baghdad, Baghdad, Iraq.
authors: Shelan Khasro
authors: SK
authors: Tawfeeq
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Bao-Sen
authors: BS
authors: Shi
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Guang-Can
authors: GC
authors: Guo
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Wei
authors: W
authors: Chen
authors: Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.|Synergetic Innovation Center of Quantum Information &Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors: Zheng-Fu
authors: ZF
authors: Han