Direct conversion of a four-atom $W$ state to a Greenberger-Horne-Zeilinger state via a dissipative process

Jie Song, Xiu-Dong Sun, Qing-Xia Mu, Ling-Li Zhang, Yan Xia, and He-Shan Song

Phys. Rev. A 88, 024305 – Published 30 August 2013

Abstract

We consider an open quantum system consisting of four atoms which are placed in a damped cavity. Through a dissipative dynamics process, a $W$ state can be converted into a Greenberger-Horne-Zeilinger state with deterministic probability. In addition, the interaction time need not be controlled strictly in the dynamics process. The protocol may open up a promising perspective for quantum state conversion between different classes of entanglement and cavity quantum electrodynamics systems.

Received 26 February 2013

DOI:https://doi.org/10.1103/PhysRevA.88.024305

Authors & Affiliations

Jie Song^1,*, Xiu-Dong Sun¹, Qing-Xia Mu², Ling-Li Zhang¹, Yan Xia^3,†, and He-Shan Song⁴

¹Department of Physics, Harbin Institute of Technology, Harbin 150001, P.R. China
²School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
³Department of Physics, Fuzhou University, Fuzhou 350002, China
⁴School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

^*jsong@hit.edu.cn
^†xia-208@163.com

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Vol. 88, Iss. 2 — August 2013

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