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arXiv quant-ph/0501086quant-ph
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超越不可克隆极限的高保真隐形传态和连续变量纠缠交换

High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables

Nobuyuki Takei, Hidehiro Yonezawa, Takao Aoki, Akira Furusawa

摘要:

实验证明了连续变量量子隐形传态的不可克隆性。我们传送了一个相干态,并达到了0.70 $\pm$ 0.02的保真度,超过了2/3的无克隆限制。为了转移输入量子态的非经典性,必须超越这个极限。通过使用我们的高保真传送器,我们演示了纠缠交换,即量子纠缠的传送,作为非经典传递的一个例子。

英文摘要:

We experimentally demonstrate continuous-variable quantum teleportation beyond the no-cloning limit. We teleport a coherent state and achieve the fidelity of 0.70$\pm$0.02 that surpasses the no-cloning limit of 2/3. Surpassing the limit is necessary to transfer the nonclassicality of an input quantum state. By using our high-fidelity teleporter, we demonstrate entanglement swapping, namely teleportation of quantum entanglement, as an example of transfer of nonclassicality.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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