Generation of three-atom singlet state in a bimodal cavity via quantum Zeno dynamics

Authors:
Zhi-Cheng Shi;Yan Xia;Jie Song;He-Shan Song
Affiliations:
Department of Physics, Fuzhou University, Fuzhou, China 350002;Department of Physics, Fuzhou University, Fuzhou, China 350002 and School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, China 116024;Department of Physics, Harbin Institute of Technology, Harbin, China 150001;School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, China 116024
Venue:
Quantum Information Processing
Year:
2013

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Abstract

We propose an efficient scheme for generation of three-atom singlet state in a bimodal cavity based on quantum Zeno dynamics and the large detuning condition. The influence of decoherence induced by cavity decay and atomic spontaneous emission is also discussed by numerical calculation. The advantages of the scheme are that the initial input states of atoms are not entangled and the fidelity is insensitive to cavity decay and atomic spontaneous emission due to no exciting the cavity fields during the whole evolution and the large detuning condition.