Promote entanglement trapping in photonic band gaps

We study the entanglement trapping of two entangled qubits, each of which is in its own photonic band gap, based on the weak measurement and quantum measurement reversal. An almost maximal entanglement of the two-qubit system can be trapped by using a certain weak measurement strength. Furthermore,...

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Bibliographic Details
Published inChinese physics B Vol. 23; no. 11; pp. 174 - 179
Main Author 韩伟 张英杰 闫伟斌 夏云杰
Format Journal Article
LanguageEnglish
Published 01.11.2014
Subjects
Entanglement
Optimization
Photonic band gaps
Photonics
Qubits (quantum computing)
Strength
Trapping
俘获
光子带隙
初始状态
强度测量
系统
纠缠
量子位
量子测量
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/23/11/110304

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Summary:We study the entanglement trapping of two entangled qubits, each of which is in its own photonic band gap, based on the weak measurement and quantum measurement reversal. An almost maximal entanglement of the two-qubit system can be trapped by using a certain weak measurement strength. Furthermore, we find that the optimal entanglement enhancing is not only dependent on the weak measurement strength but also on the different initial states. The outcomes in our scheme are completely different from that without any measurement on the studied system.
Bibliography:We study the entanglement trapping of two entangled qubits, each of which is in its own photonic band gap, based on the weak measurement and quantum measurement reversal. An almost maximal entanglement of the two-qubit system can be trapped by using a certain weak measurement strength. Furthermore, we find that the optimal entanglement enhancing is not only dependent on the weak measurement strength but also on the different initial states. The outcomes in our scheme are completely different from that without any measurement on the studied system.
quantum information, entanglement trapping, weak measurement, quantum measurement reversal
Han Wei, Zhang Ying-Jie, Yan Wei-Bin and Xia Yun-Jie（ a） Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China b ） Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/11/110304