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腔量子电动力学中的密集编码方案研究

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翻新时间:2013-12-18

腔量子电动力学中的密集编码方案研究

腔量子电动力学中的密集编码方案研究

关键词:量子密集编码;W类态;腔量子电动力学

Schemes for implementing perfect dense coding in cavity QED

Abstract: In the introduction we review the concept of cavity quantum electrodynamics (QED) and quantum dense coding. We propose an experimentally feasible scheme of preparing W-class entangled state, distinguishing four mutually orthogonal W-class entangled state and then implementing perfect quantum dense coding with three-atom W-class entangled state, which was proposed by Agrawal et al (Phys. Rev. A. 74 (200

6) 0623

20), in cavity QED. In the scheme the atoms interact simultaneously with a highly detuned cavity field and the cavity is only virtually excited, thus the scheme is insensitive to the cavity decay,and it can be carried out in the experiment.

Keywords: Dense coding; W-class state; cavity QED

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