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Chin. Phys. B, 2015, Vol. 24(12): 120302    DOI: 10.1088/1674-1056/24/12/120302
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Dynamics of super-quantum discord and direct control with weak measurement in open quantum system

Ji Ying-Hua (嵇英华)a b
a Department of Physics, Jiangxi Normal University, Nanchang 330022, China;
b Key Laboratory of Photoelectronics and Telecommunication of Jiangxi Province, Nanchang 330022, China
Abstract  Super-quantum discord (SQD) with weak measurement is regarded as a kind of quantum correlation in quantum information processing. We compare and analyze the dynamical evolutions of SQD, quantum discord (QD), and quantum entanglement (QE) between two qubits in the correlated dephasing environmental model. The results indicate that (i) owing to the much smaller influence of weak measurement on the coherence of the system than that of von Neumann projection measurement, SQD with weak measurement is larger than QD, and (ii) dynamical evolution of QD or QE monotonically goes to zero with time, while SQD monotonically tends to a stable value and a freezing phenomenon occurs. The stable value after freezing mainly depends on the measurement strength and the purity of the initial quantum state.
Keywords:  super-quantum discord (SQD)      weak measurement      control  
Received:  29 April 2015      Revised:  31 July 2015      Accepted manuscript online: 
PACS:  03.65.Ta (Foundations of quantum mechanics; measurement theory)  
  03.65.Ud (Entanglement and quantum nonlocality)  
  03.67.-a (Quantum information)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11264015).
Corresponding Authors:  Ji Ying-Hua     E-mail:

Cite this article: 

Ji Ying-Hua (嵇英华) Dynamics of super-quantum discord and direct control with weak measurement in open quantum system 2015 Chin. Phys. B 24 120302

[1] Datta A, Zhang L J, Nunn J, Langford N K, Feito A, Plenio M B and Walmsley I A 2012 Phys. Rev. Lett. 108 060502
[2] Ji Y H, Liu Y M and Wang Z S 2011 Chin. Phys. B 20 070304
[3] Matsuzaki Y and Nakano H 2012 Phys. Rev. B 86 184501
[4] Aharonov Y, Albert D Z and Vaidman L 1988 Phys. Rev. Lett. 60 1351
[5] Pryde G J, O' Brien J L, White A G, Ralph T C and Wiseman H M 2005 Phys. Rev. Lett. 94 220405
[6] Korotkov A N and Jordan A N 2006 Phys. Rev. Lett. 97 166805
[7] Katz N, Neeley M, Ansmaim M, Bialczak R C, Hofheinz M, Lucero E, O'Connell A, Wang H, Cleland A N, Martinis J M and Korotkov A N 2008 Phys. Rev. Lett. 101 200401
[8] Dixon P B, Starling D J, Jordan A N and Howell J C 2009 Phys. Rev. Lett. 102 173601
[9] Howell J C, Starling D J, Dixon P B, Vudyasetu P K and Jordan A N 2010 Phys. Rev. A 81 033813
[10] Lundeen J S 2011 Nature 474 188
[11] Li B, Chen L and Fan H 2014 Phys. Lett. A 378 1249
[12] Kim Y S, Lee J C, Kwon O and Kim Y H 2012 Nat. Phys. 8 117
[13] Man Z X, Xia Y J and An B N 2014 Phys. Rev. A 89 013852
[14] Man Z X, Xia Y J and An B N 2012 Phys. Rev. A 86 052322
[15] Man Z X, An B N and Xia Y J 2014 Ann. Phys. 349 209
[16] Behzadi N 2013 Quantum Inf. Process. 12 21
[17] Ali M, Rau A R P and Alber G 2010 Phys. Rev. A 81 042105
[18] Jin J S, Yu C S, Pei P and Song H S 2010 J. Opt. Soc. Am. B 27 1799
[19] Ollivier H and Zurek W H 2001 Phys. Rev. Lett. 88 017901
[20] Luo S L 2008 Phys. Rev. A 77 022301
[21] Luo S L and Fu S 2011 Phys. Rev. Lett. 106 120401
[22] Luo S L 2008 Phys. Rev. A 77 042303
[23] Berta M, Christandl M, Colbeck R, Renes J M and Renner R 2010 Nat. Phys. 6 659
[24] Xiao X and Feng M 2011 Phys. Rev. A 83 054301
[25] Jin J S, Yu C S, Pei P and Song H S 2010 J. Opt. Soc. Am. B 27 1799
[26] Wang Y K, Ma T, Fan H, Fei S M and Wang Z X 2014 Quantum Inf. Process. 13 283
[27] Singh U and Pati A K 2014 Ann. Phys. 343 141
[28] Ban M 2009 Phys. Rev. A 80 032114
[29] Lingblad G 1976 Commun. Math. Phys. 48 119
[30] Wootters W K 1998 Phys. Rev. Lett. 80 2245
[31] Brariczyk A M, Mendonya P E M F, Gilchrist A, Doherty A C and Bartlett S D 2007 Phys. Rev. A 75 012329
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