Observation of three-photon Greenberger-Horne-Zeilinger entanglement
Observation of three-photon Greenberger-Horne-Zeilinger entanglement
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DOI：
10.1103/physrevlett.82.1345
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发表时间：
1999-02-15
影响因子：
8.6
通讯作者：
Zeilinger, A
中科院分区：
文献类型：
--
作者：
Bouwmeester, D;Pan, JW;Zeilinger, A
本文给出了空间分离的三光子偏振纠缠的实验观测结果。这种两个以上纠缠粒子的状态，被称为格林伯格-霍恩-蔡林格（GHZ）状态，在量子力学与局域实在论的基本测试以及许多量子信息和量子计算方案中起着至关重要的作用。我们的实验安排是这样的，我们从两对纠缠的光子开始，并以一种方式记录光子，即任何关于每个光子属于哪一对的信息都被擦除。在探测到触发光子之后，在探测器处针对剩余三个光子的记录事件表现出期望的GHZ相关性。[S0031-9007（98）08348-3]。
We present the experimental observation of polarization entanglement for three spatially separated photons. Such states of more than two entangled particles, known as Greenberger-Horne-Zeilinger (GHZ) states, play a crucial role in fundamental tests of quantum mechanics versus local realism and in many quantum information and quantum computation schemes. Our experimental arrangement is such that we start with two pairs of entangled photons and register the photons in a way that any information as to which pair each photon belongs to is erased. After detecting a trigger photon, the registered events at the detectors for the remaining three photons exhibit the desired GHZ correlations. [S0031-9007(98)08348-3].