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Local expansion of atomic W state in cavity quantum electrodynamics

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Abstract

Based on resonant interactions between atoms and cavity modes, we have designed a scheme for expanding atomic entangled W states. By sending one of the atoms in a N-atom W state and an auxiliary excited-state atom into an vacuum cavity, we have obtained a (N + 1)-atom W state by detecting the cavity field after interaction. The feasibility analysis indicates that this scheme may be implementable in near future.

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Acknowledgments

This work is supported by National Natural Science Foundation of China (NSFC) under Grants Nos. 11274010, 11374085, 11204002, 11247301, 61073048, 10905024 and 11005029, the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20113401110002), the Key Project of Chinese Ministry of Education (No. 210092), Anhui Provincial Natural Science Foundation under Grants Nos. 11040606M16, 10040606Q51, 1208085QA14 and 1308085QA18, the Key Program of the Education Department of Anhui Province under Grants Nos. KJ2013B172 KJ2012A020, KJ2012A244, KJ2012B075, KJ2012A206, KJ2011A243, KJ2011Z268, the ‘211’ Project of Anhui University, the Talent Foundation of Anhui University under Grant No. 33190019, and the personnel department of Anhui province.

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Authors and Affiliations

  1. Department of Mechanical and Electronic Engineering, Chizhou University, Chizhou, 247000, China

    X-P Zang, W-F Wu & S-D Fang

  2. Key Laboratory of Opto-electronic Information Acquisition and Manipulation, Ministry of Education, School of Physics and Material Science, Anhui University, Hefei, 230601, China

    X-P Zang & M Yang

  3. School of Electronic and Information Engineering, Hefei Normal University, Hefei, 230061, China

    Z-L Cao

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  1. X-P Zang
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  2. M Yang
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  3. W-F Wu
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  4. S-D Fang
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  5. Z-L Cao
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Correspondence to M Yang.

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Zang, XP., Yang, M., Wu, WF. et al. Local expansion of atomic W state in cavity quantum electrodynamics. Indian J Phys 88, 1141–1145 (2014). https://doi.org/10.1007/s12648-014-0564-9

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  • DOI: https://doi.org/10.1007/s12648-014-0564-9

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