Storage of multiple single-photon pulses emitted from a quantum dot in a solid-state quantum memory

Jian-Shun Tang, Zong-Quan Zhou, Yi-Tao Wang, Yu-Long Li, Xiao Liu, Yi-Lin Hua, Yang Zou, Shuang Wang, He De-Yong, Geng Chen, Yong-Nan Sun, Ying Yu, Mi-Feng Li, Guo-Wei Zha, Hai-Qiao Ni, Zhi-Chuan Niu (), Chuan-Feng Li () and Guang-Can Guo
Additional contact information
Jian-Shun Tang: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Zong-Quan Zhou: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Yi-Tao Wang: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Yu-Long Li: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Xiao Liu: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Yi-Lin Hua: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Yang Zou: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Shuang Wang: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
He De-Yong: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Geng Chen: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Yong-Nan Sun: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Ying Yu: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China
Mi-Feng Li: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China
Guo-Wei Zha: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China
Hai-Qiao Ni: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China
Zhi-Chuan Niu: Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China
Chuan-Feng Li: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
Guang-Can Guo: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract Quantum repeaters are critical components for distributing entanglement over long distances in presence of unavoidable optical losses during transmission. Stimulated by the Duan–Lukin–Cirac–Zoller protocol, many improved quantum repeater protocols based on quantum memories have been proposed, which commonly focus on the entanglement-distribution rate. Among these protocols, the elimination of multiple photons (or multiple photon-pairs) and the use of multimode quantum memory are demonstrated to have the ability to greatly improve the entanglement-distribution rate. Here, we demonstrate the storage of deterministic single photons emitted from a quantum dot in a polarization-maintaining solid-state quantum memory; in addition, multi-temporal-mode memory with 1, 20 and 100 narrow single-photon pulses is also demonstrated. Multi-photons are eliminated, and only one photon at most is contained in each pulse. Moreover, the solid-state properties of both sub-systems make this configuration more stable and easier to be scalable. Our work will be helpful in the construction of efficient quantum repeaters based on all-solid-state devices.

Date: 2015
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DOI: 10.1038/ncomms9652

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