Promote entanglement trapping in photonic band gaps

doi:10.1088/1674-1056/23/11/110304

Abstract 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.

Keywords: quantum information entanglement trapping weak measurement quantum measurement reversal

Received: 19 February 2014
Revised: 13 May 2014
Accepted manuscript online:

PACS:	03.65.Ta	(Foundations of quantum mechanics; measurement theory)
	03.65.Yz	(Decoherence; open systems; quantum statistical methods)
	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61178012, 11247240, and 11304179), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant Nos. 20123705120002 and 20133705110001), the Natural Science Foundation of Shandong Province, China (Grant No. ZR2012FQ024), the Youth Funds from Qufu Normal University, China (Grant No. XJ201219), and the Scientific Research Foundation of Qufu Normal University for Doctors, China (Grant No. BSQD20110132).

Corresponding Authors: Xia Yun-Jie
E-mail: yjxia@mail.qfnu.edu.cn

Cite this article:

Han Wei (韩伟), Zhang Ying-Jie (张英杰), Yan Wei-Bin (闫伟斌), Xia Yun-Jie (夏云杰) Promote entanglement trapping in photonic band gaps 2014 Chin. Phys. B 23 110304

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