One-step synthesis of multiatom Greenberger-Horne-Zeilinger states.
One-step synthesis of multiatom Greenberger-Horne-Zeilinger states.
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DOI：
10.1103/physrevlett.87.230404
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发表时间：
2001-11
影响因子：
8.6
通讯作者：
Shi-Biao Zheng
中科院分区：
文献类型：
--
作者：
Shi-Biao Zheng
提出了一种产生最大纠缠Greenberger-Horne-Zeilinger（GHZ）原子态的方案，用于检验量子非局域性。在该方案中，三个原子同时被送入真空状态下的非共振腔。它们最初处于相同的状态，因此在这个过程中没有能量交换。腔辅助碰撞导致的相移取决于集体原子激发。原则上，该方案可以推广到产生N原子GHZ态。该方案对腔衰减不敏感，只需要一个腔，为测试量子力学的基本方面和量子信息处理提供了新的前景。
A scheme is proposed for generating maximally entangled Greenberger-Horne-Zeilinger (GHZ) atomic states for testing quantum nonlocality. In the scheme, three atoms are simultaneously sent through a nonresonant cavity in a vacuum state. They are initially in the same state, and thus there is no energy exchange in the process. The cavity-assisted collision results in a phase-shift which depends upon the collective atomic excitations. In principle, the scheme can be generalized to generate N-atom GHZ states. The scheme is insensitive to cavity decay and requires only one cavity, providing new prospects for testing fundamental aspects of quantum mechanics and for quantum information processing.