Efficient multipartite entanglement purification with the entanglement link from a subspace

被引：116
作者：
Deng, Fu-Guo [1 ]
机构：
[1] Beijing Convent Univ, Dept Phys, Appl Opt Beijing Area Major Lab, Beijing 100875, Peoples R China
来源：
PHYSICAL REVIEW A | 2011年 / 84卷 / 05期
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
QUANTUM CRYPTOGRAPHY; STATE;
D O I：
10.1103/PhysRevA.84.052312
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present an efficient multipartite entanglement purification protocol (MEPP) for N-photon systems in a Greenberger-Horne-Zeilinger state with parity-check detectors. It contains two parts. One is the conventional MEPP with which the parties can obtain a high-fidelity N-photon ensemble directly, similar to the MEPP with controlled-NOT gates. The other is our recycling MEPP in which the entanglement link is used to produce some N-photon entangled systems from entangled N'-photon subsystems (2 <= N' < N) coming from the instances which are just discarded in all existing conventional MEPPs. The entangled N'-photon subsystems are obtained efficiently by measuring the photons with potential bit-flip errors. With these two parts, the present MEPP has a higher efficiency than all other conventional MEPPs.
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页数：15
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共 55 条
[1]   Symmetry analyzer for nondestructive Bell-state detection using weak nonlinearities [J].
Barrett, SD ;
Kok, P ;
Nemoto, K ;
Beausoleil, RG ;
Munro, WJ ;
Spiller, TP .
PHYSICAL REVIEW A, 2005, 71 (06)
[2]  
Bennett C. H., 2014, Theoretical computer science, P175, DOI [DOI 10.1016/J.TCS.2014.05.025, 10.1016/j.tcs.2014.05.025]
[3]   COMMUNICATION VIA ONE-PARTICLE AND 2-PARTICLE OPERATORS ON EINSTEIN-PODOLSKY-ROSEN STATES [J].
BENNETT, CH ;
WIESNER, SJ .
PHYSICAL REVIEW LETTERS, 1992, 69 (20) :2881-2884
[4]   TELEPORTING AN UNKNOWN QUANTUM STATE VIA DUAL CLASSICAL AND EINSTEIN-PODOLSKY-ROSEN CHANNELS [J].
BENNETT, CH ;
BRASSARD, G ;
CREPEAU, C ;
JOZSA, R ;
PERES, A ;
WOOTTERS, WK .
PHYSICAL REVIEW LETTERS, 1993, 70 (13) :1895-1899
[5]   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
[6]   QUANTUM CRYPTOGRAPHY WITHOUT BELL THEOREM [J].
BENNETT, CH ;
BRASSARD, G ;
MERMIN, ND .
PHYSICAL REVIEW LETTERS, 1992, 68 (05) :557-559
[7]   CNOT and Bell-state analysis in the weak-coupling cavity QED regime [J].
Bonato, Cristian ;
Haupt, Florian ;
Oemrawsingh, Sumant S. R. ;
Gudat, Jan ;
Ding, Dapeng ;
van Exter, Martin P. ;
Bouwmeester, Dirk .
PHYSICAL REVIEW LETTERS, 2010, 104 (16)
[8]  
Chuang I. N., 2000, Quantum Computation and Quantum Information
[9]   How to share a quantum secret [J].
Cleve, R ;
Gottesman, D ;
Lo, HK .
PHYSICAL REVIEW LETTERS, 1999, 83 (03) :648-651
[10]   Quantum state sharing of an arbitrary two-qubit state with two-photon entanglements and Bell-state measurements [J].
Deng, F. -G. ;
Li, X. -H. ;
Li, C. -Y. ;
Zhou, P. ;
Zhou, H. -Y. .
EUROPEAN PHYSICAL JOURNAL D, 2006, 39 (03) :459-464
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