Highly efficient optical quantum memory with long coherence time in cold atoms

被引:151
作者
Cho, Y-W [1 ]
Campbell, G. T. [1 ]
Everett, J. L. [1 ]
Bernu, J. [1 ]
Higginbottom, D. B. [1 ]
Cao, M. T. [1 ]
Geng, J. [1 ]
Robins, N. P. [2 ]
Lam, P. K. [1 ]
Buchler, B. C. [1 ]
机构
[1] Australian Natl Univ, Dept Quantum Sci, Ctr Quantum Computat & Commun Technol, GPO Box 4, Canberra, ACT 0200, Australia
[2] Australian Natl Univ, Dept Quantum Sci, GPO Box 4, Canberra, ACT 0200, Australia
基金
澳大利亚研究理事会; 新加坡国家研究基金会;
关键词
SINGLE-PHOTON-LEVEL; TELECOM-WAVELENGTH; STORAGE;
D O I
10.1364/OPTICA.3.000100
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Optical quantum memory is an essential element for long-distance quantum communication and photonic quantum computation protocols. The practical implementation of such protocols requires an efficient quantum memory with a long coherence time. Beating the no-cloning limit, for example, requires efficiencies above 50%. An ideal optical fiber loop has a loss of 50% in 100 mu s, and until now no universal quantum memory has beaten this time efficiency limit. Here, we report results of a gradient echo memory experiment in a cold atomic ensemble with a 1/e coherence time up to 1 ms and maximum efficiency up to 87% +/- 2% for short storage times. Our experimental data demonstrate greater than 50% efficiency for storage times up to 0.6 ms. Quantum storage ability is verified beyond the ideal fiber limit using heterodyne tomography of small coherent states. (C) 2016 Optical Society of America
引用
收藏
页码:100 / 107
页数:8
相关论文
共 57 条
[1]   A waveguide frequency converter connecting rubidium-based quantum memories to the telecom C-band [J].
Albrecht, Boris ;
Farrera, Pau ;
Fernandez-Gonzalvo, Xavier ;
Cristiani, Matteo ;
de Riedmatten, Hugues .
NATURE COMMUNICATIONS, 2014, 5 :3376
[2]   Efficient and long-lived quantum memory with cold atoms inside a ring cavity [J].
Bao, Xiao-Hui ;
Reingruber, Andreas ;
Dietrich, Peter ;
Rui, Jun ;
Dueck, Alexander ;
Strassel, Thorsten ;
Li, Li ;
Liu, Nai-Le ;
Zhao, Bo ;
Pan, Jian-Wei .
NATURE PHYSICS, 2012, 8 (07) :517-521
[3]   Homodyne Tomography of a Single Photon Retrieved on Demand from a Cavity-Enhanced Cold Atom Memory [J].
Bimbard, Erwan ;
Boddeda, Rajiv ;
Vitrant, Nicolas ;
Grankin, Andrey ;
Parigi, Valentina ;
Stanojevic, Jovica ;
Ourjoumtsev, Alexei ;
Grangier, Philippe .
PHYSICAL REVIEW LETTERS, 2014, 112 (03)
[4]   Prospective applications of optical quantum memories [J].
Bussieres, Felix ;
Sangouard, Nicolas ;
Afzelius, Mikael ;
de Riedmatten, Hugues ;
Simon, Christoph ;
Tittel, Wolfgang .
JOURNAL OF MODERN OPTICS, 2013, 60 (18) :1519-1537
[5]   Coherent Optical Memory with High Storage Efficiency and Large Fractional Delay [J].
Chen, Yi-Hsin ;
Lee, Meng-Jung ;
Wang, I-Chung ;
Du, Shengwang ;
Chen, Yong-Fan ;
Chen, Ying-Cheng ;
Yu, Ite A. .
PHYSICAL REVIEW LETTERS, 2013, 110 (08)
[6]   Mapping photonic entanglement into and out of a quantum memory [J].
Choi, K. S. ;
Deng, H. ;
Laurat, J. ;
Kimble, H. J. .
NATURE, 2008, 452 (7183) :67-U4
[7]   Large efficiency at telecom wavelength for optical quantum memories [J].
Dajczgewand, Julian ;
Le Gouet, Jean-Louis ;
Louchet-Chauvet, Anne ;
Chaneliere, Thierry .
OPTICS LETTERS, 2014, 39 (09) :2711-2714
[8]   Quantum Storage of Orbital Angular Momentum Entanglement in an Atomic Ensemble [J].
Ding, Dong-Sheng ;
Zhang, Wei ;
Zhou, Zhi-Yuan ;
Shi, Shuai ;
Xiang, Guo-Yong ;
Wang, Xi-Shi ;
Jiang, Yun-Kun ;
Shi, Bao-Sen ;
Guo, Guang-Can .
PHYSICAL REVIEW LETTERS, 2015, 114 (05)
[9]   Light storage on the time scale of a minute [J].
Dudin, Y. O. ;
Li, L. ;
Kuzmich, A. .
PHYSICAL REVIEW A, 2013, 87 (03)
[10]   From Photons to Phonons and Back: A THz Optical Memory in Diamond [J].
England, D. G. ;
Bustard, P. J. ;
Nunn, J. ;
Lausten, R. ;
Sussman, B. J. .
PHYSICAL REVIEW LETTERS, 2013, 111 (24)