Efficient quantum repeater based on deterministic Rydberg gates

被引：73
作者：
Zhao, Bo [1 ,2 ]
Mueller, Markus [1 ,2 ]
Hammerer, Klemens [1 ,2 ]
Zoller, Peter [1 ,2 ]
机构：
[1] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria
[2] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 05期
关键词：
ATOMIC ENSEMBLES; NOISY CHANNELS; ENTANGLEMENT; MEMORY; COMMUNICATION; TELEPORTATION; EXCITATION; NETWORKS; BLOCKADE; LIGHT;
D O I：
10.1103/PhysRevA.81.052329
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose an efficient quantum repeater architecture with mesoscopic atomic ensembles, where the Rydberg blockade is employed for deterministic local entanglement generation, entanglement swapping, and entanglement purification. Compared to a conventional atomic-ensemble-based quantum repeater, the entanglement distribution rate is improved by up to two orders of magnitude with the help of the deterministic Rydberg gate. This quantum repeater scheme is robust and fast, and thus opens up a way for practical long-distance quantum communication.
引用
收藏
页数：5
相关论文
共 43 条
[1]   Purification of noisy entanglement and faithful teleportation via noisy channels [J].
Bennett, CH ;
Brassard, G ;
Popescu, S ;
Schumacher, B ;
Smolin, JA ;
Wootters, WK .
PHYSICAL REVIEW LETTERS, 1996, 76 (05) :722-725
[2]   Quantum repeaters:: The role of imperfect local operations in quantum communication [J].
Briegel, HJ ;
Dür, W ;
Cirac, JI ;
Zoller, P .
PHYSICAL REVIEW LETTERS, 1998, 81 (26) :5932-5935
[3]   Quantum computing with collective ensembles of multilevel systems [J].
Brion, E. ;
Molmer, K. ;
Saffman, M. .
PHYSICAL REVIEW LETTERS, 2007, 99 (26)
[4]   Memory-built-in quantum teleportation with photonic and atomic qubits [J].
Chen, Yu-Ao ;
Chen, Shuai ;
Yuan, Zhen-Sheng ;
Zhao, Bo ;
Chuu, Chih-Sung ;
Schmiedmayer, Joerg ;
Pan, Jian-Wei .
NATURE PHYSICS, 2008, 4 (02) :103-107
[5]   Fault-tolerant quantum repeater with atomic ensembles and linear optics [J].
Chen, Zeng-Bing ;
Zhao, Bo ;
Chen, Yu-Ao ;
Schmiedmayer, Joerg ;
Pan, Jian-Wei .
PHYSICAL REVIEW A, 2007, 76 (02)
[6]   Fault-tolerant quantum communication based on solid-state photon emitters [J].
Childress, L ;
Taylor, JM ;
Sorensen, AS ;
Lukin, MD .
PHYSICAL REVIEW LETTERS, 2006, 96 (07) :1-4
[7]   Functional quantum nodes for entanglement distribution over scalable quantum networks [J].
Chou, Chin-Wen ;
Laurat, Julien ;
Deng, Hui ;
Choi, Kyung Soo ;
de Riedmatten, Hugues ;
Felinto, Daniel ;
Kimble, H. Jeff .
SCIENCE, 2007, 316 (5829) :1316-1320
[8]   Measurement-induced entanglement for excitation stored in remote atomic ensembles [J].
Chou, CW ;
de Riedmatten, H ;
Felinto, D ;
Polyakov, SV ;
van Enk, SJ ;
Kimble, HJ .
NATURE, 2005, 438 (7069) :828-832
[9]   Quantum privacy amplification and the security of quantum cryptography over noisy channels [J].
Deutsch, D ;
Ekert, A ;
Jozsa, R ;
Macchiavello, C ;
Popescu, S ;
Sanpera, A .
PHYSICAL REVIEW LETTERS, 1996, 77 (13) :2818-2821
[10]   Long-distance quantum communication with atomic ensembles and linear optics [J].
Duan, LM ;
Lukin, MD ;
Cirac, JI ;
Zoller, P .
NATURE, 2001, 414 (6862) :413-418
12345