Teleportation of unknown atomic state through entangled cavity field channel
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摘要: 为了有效地进行原子态的量子隐形传输,提出了一个使用纠缠腔场的原子量子比特态的量子隐形传输新方案,利用位于高品质光腔中的三能级原子与腔场进行大失谐的相互作用来实现,并讨论了光腔的耗散对量子隐形传输的影响。结果表明,该方案不需要辅助原子就能将一个原子态直接传输到另一个原子上,并且在不考虑光腔损耗的情况下传输效率达到100%;对于小的衰减,对任意态的传输,其保真度都接近1.0。该研究对量子通讯的发展是有帮助的。Abstract: In order to realize quantum teleportation efficiently, a new scheme for quantum teleportation of atomic qubit states was presented based on entangled cavity fields. This scheme was realized based on the interaction between a single three-level atom in high quality light cavity and light field under large detuning. The effect of the damping of cavity field on quantum teleportation was discussed. The result shows that one atomic state is transmitted directly to another atom without help of auxiliary atoms in this scheme, efficiency of quantum teleportation reaches 100% in case of ideal light cavity and fidelity of quantum teleportation is close 1.0 for any the transmitted states in case of small damping.
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Keywords:
- quantum optics /
- teleportation /
- entanglement state /
- high quality light cavity
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