翻新时间:2022-08-30
腔量子电动力学中的量子隐形传态方案
腔量子电动力学中的量子隐形传态方案
关键词:腔量子电动力学;纠缠;隐形传态;量子信息
Scheme for quantum teleportation in cavity quantum electrodynamics
Abstract: In the first part of this paper, we have reviewed some progresses in the quantum information theory, such as cavity quantum electrodynamics (QED), resonant or non-resonant interaction between atoms and the cavity, quantum teleportation. We have prepared the three-atom W-class entangled state, distinguished four mutually orthogonal W-class entangled state and then realized the teleportation scheme with W-class entangled state in the context of cavity quantum electrodynamics (which were proposed by Agrawal et al Phys. Rev. A. 74 (200
6) 0623
20). We also generalize this idea to teleport unknown two-atom entangled state. The main advantage is that there is no energy exchange between the atoms and the cavity due to the large detuning interaction between them, thus the requirement of the quality of the cavity is greatly loosened. .The reliability of the scheme has been greatly enhanced due to increasing one atom in the quantum channel.
Key words: cavity QED; entanglement; teleportation; quantum information
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