Experimental entanglement swapping: Entangling photons that never interacted
Experimental entanglement swapping: Entangling photons that never interacted
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DOI：
10.1103/physrevlett.80.3891
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发表时间：
1998-05-04
影响因子：
8.6
通讯作者：
Zeilinger, A
中科院分区：
文献类型：
--
作者：
Pan, JW;Bouwmeester, D;Zeilinger, A
我们通过实验将自由传播的粒子缠绕在一起，这些粒子从来没有物理上相互作用过，或者从来没有通过任何其他方式进行过动态耦合。这表明，量子纠缠要求纠缠粒子既不是来自共同的来源，也不是过去发生过相互作用。在我们的实验中，我们取了两对偏振纠缠光子，并对每对光子中的一对进行了贝尔态测量。这导致将另外两个出射的光子投射到纠缠态。
We experimentally entangle freely propagating particles that never physically interacted with one another or which have never been dynamically coupled by any other means. This demonstrates that quantum entanglement requires the entangled particles neither to come from a common source nor to have interacted in the past. In our experiment we take two pairs of polarization entangled photons and subject one photon from each pair to a Bell-state measurement. This results in projecting the other two outgoing photons into an entangled state.