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Title: Decoherence suppression of tripartite entanglement in non-Markovian environments by using weak measurements

Abstract

A feasible scheme for protecting the Greenberger–Horne–Zeilinger (GHZ) entanglement state in non-Markovian environments is proposed. It consists of prior weak measurement on each qubit before the interaction with decoherence environments followed by post quantum measurement reversals. It is shown that both the fidelity and concurrence of the GHZ state can be effectively improved. Meanwhile, we also verified that our scenario can enhance tripartite nonlocality remarkably. In addition, the result indicates that the larger the weak measurement strength, the better the effectiveness of the scheme with the lower success probability.

Authors:
 [1];  [2];  [3];  [1]
  1. School of Physics & Material Science, Anhui University, Hefei 230039 (China)
  2. (China)
  3. School of Physics & Electronic Engineering, Fuyang Normal University, Fuyang 236037 (China)
Publication Date:
OSTI Identifier:
22617465
Resource Type:
Journal Article
Resource Relation:
Journal Name: Annals of Physics; Journal Volume: 377; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; QUANTUM DECOHERENCE; QUANTUM ENTANGLEMENT; QUBITS

Citation Formats

Ding, Zhi-yong, School of Physics & Electronic Engineering, Fuyang Normal University, Fuyang 236037, He, Juan, E-mail: juanhe78@163.com, and Ye, Liu, E-mail: yeliu@ahu.edu.cn. Decoherence suppression of tripartite entanglement in non-Markovian environments by using weak measurements. United States: N. p., 2017. Web. doi:10.1016/J.AOP.2016.12.004.
Ding, Zhi-yong, School of Physics & Electronic Engineering, Fuyang Normal University, Fuyang 236037, He, Juan, E-mail: juanhe78@163.com, & Ye, Liu, E-mail: yeliu@ahu.edu.cn. Decoherence suppression of tripartite entanglement in non-Markovian environments by using weak measurements. United States. doi:10.1016/J.AOP.2016.12.004.
Ding, Zhi-yong, School of Physics & Electronic Engineering, Fuyang Normal University, Fuyang 236037, He, Juan, E-mail: juanhe78@163.com, and Ye, Liu, E-mail: yeliu@ahu.edu.cn. Wed . "Decoherence suppression of tripartite entanglement in non-Markovian environments by using weak measurements". United States. doi:10.1016/J.AOP.2016.12.004.
@article{osti_22617465,
title = {Decoherence suppression of tripartite entanglement in non-Markovian environments by using weak measurements},
author = {Ding, Zhi-yong and School of Physics & Electronic Engineering, Fuyang Normal University, Fuyang 236037 and He, Juan, E-mail: juanhe78@163.com and Ye, Liu, E-mail: yeliu@ahu.edu.cn},
abstractNote = {A feasible scheme for protecting the Greenberger–Horne–Zeilinger (GHZ) entanglement state in non-Markovian environments is proposed. It consists of prior weak measurement on each qubit before the interaction with decoherence environments followed by post quantum measurement reversals. It is shown that both the fidelity and concurrence of the GHZ state can be effectively improved. Meanwhile, we also verified that our scenario can enhance tripartite nonlocality remarkably. In addition, the result indicates that the larger the weak measurement strength, the better the effectiveness of the scheme with the lower success probability.},
doi = {10.1016/J.AOP.2016.12.004},
journal = {Annals of Physics},
number = ,
volume = 377,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2017},
month = {Wed Feb 15 00:00:00 EST 2017}
}