Stabilization of All Bell States in a Lossy Coupled-Cavity Array

Stabilization of All Bell States in a Lossy Coupled-Cavity Array

A scheme is proposed to generate maximally entangled states of two <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">&#923;</mi> </semantics> </math> </inline-formula>-type atoms trapped in separa...

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Main Authors: Bing Liu, Dong-Xiao Li, Xiao-Qiang Shao
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Entropy
Subjects:
Bell state
quantum-jump-based feedback
dissipative dynamics
Online Access:https://www.mdpi.com/1099-4300/21/4/402
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spelling doaj-d9ef8f7ebc474a2ebc2c521ae30d8f852020-11-25T00:58:53ZengMDPI AGEntropy1099-43002019-04-0121440210.3390/e21040402e21040402Stabilization of All Bell States in a Lossy Coupled-Cavity ArrayBing Liu0Dong-Xiao Li1Xiao-Qiang Shao2Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, ChinaCenter for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, ChinaCenter for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, ChinaA scheme is proposed to generate maximally entangled states of two <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">&#923;</mi> </semantics> </math> </inline-formula>-type atoms trapped in separate overdamped optical cavities using quantum-jump-based feedback. This proposal can stabilize not only the singlet state, but also the other three triplet states by alternating the detuning parameter and relative phase of the classical fields. Meanwhile it is convenient to manipulate atoms, and much more robust against spontaneous emission of atoms. The parameters related to the potential experiment are analyzed comprehensively and it is confirmed that the quantum feedback technology is a significant tool for entanglement production with a high fidelity.https://www.mdpi.com/1099-4300/21/4/402Bell statequantum-jump-based feedbackdissipative dynamics
collection DOAJ
language English
format Article
sources DOAJ
author Bing Liu
Dong-Xiao Li
Xiao-Qiang Shao
spellingShingle Bing Liu
Dong-Xiao Li
Xiao-Qiang Shao
Stabilization of All Bell States in a Lossy Coupled-Cavity Array
Entropy
Bell state
quantum-jump-based feedback
dissipative dynamics
author_facet Bing Liu
Dong-Xiao Li
Xiao-Qiang Shao
author_sort Bing Liu
title Stabilization of All Bell States in a Lossy Coupled-Cavity Array
title_short Stabilization of All Bell States in a Lossy Coupled-Cavity Array
title_full Stabilization of All Bell States in a Lossy Coupled-Cavity Array
title_fullStr Stabilization of All Bell States in a Lossy Coupled-Cavity Array
title_full_unstemmed Stabilization of All Bell States in a Lossy Coupled-Cavity Array
title_sort stabilization of all bell states in a lossy coupled-cavity array
publisher MDPI AG
series Entropy
issn 1099-4300
publishDate 2019-04-01
description A scheme is proposed to generate maximally entangled states of two <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">&#923;</mi> </semantics> </math> </inline-formula>-type atoms trapped in separate overdamped optical cavities using quantum-jump-based feedback. This proposal can stabilize not only the singlet state, but also the other three triplet states by alternating the detuning parameter and relative phase of the classical fields. Meanwhile it is convenient to manipulate atoms, and much more robust against spontaneous emission of atoms. The parameters related to the potential experiment are analyzed comprehensively and it is confirmed that the quantum feedback technology is a significant tool for entanglement production with a high fidelity.
topic Bell state
quantum-jump-based feedback
dissipative dynamics
url https://www.mdpi.com/1099-4300/21/4/402
work_keys_str_mv AT bingliu stabilizationofallbellstatesinalossycoupledcavityarray
AT dongxiaoli stabilizationofallbellstatesinalossycoupledcavityarray
AT xiaoqiangshao stabilizationofallbellstatesinalossycoupledcavityarray
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