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arXiv quant-ph/0410244quant-ph
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光子钟形态分析器的实验实现

Experimental Realization of a Photonic Bell-State Analyzer

Philip Walther, Anton Zeilinger

摘要:

高效的隐形传态是量子计算和量子网络的关键一步。在量子比特的情况下,必须区分四种不同的纠缠贝尔态。我们已经实现了一个概率,但在原则上是确定性的,贝尔态分析仪的两个光子量子比特的使用无损控制非门的基础上完全线性光学元件。由于利用了量子干涉效应,该门能够以高于75%的保真度区分所有的贝尔态,而没有任何噪声扣除。

英文摘要:

Efficient teleportation is a crucial step for quantum computation and quantum networking. In the case of qubits, four different entangled Bell states have to be distinguished. We have realized a probabilistic, but in principle deterministic, Bell-state analyzer for two photonic quantum bits by the use of a nondestructive controlled-NOT gate based on entirely linear optical elements. This gate was capable of distinguishing between all of the Bell states with higher than 75% fidelity without any noise substraction due to utilizing quantum interference effects.

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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