Zheng S B
Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, People's Republic of China.
Phys Rev Lett. 2001 Dec 3;87(23):230404. doi: 10.1103/PhysRevLett.87.230404. Epub 2001 Nov 16.
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.
提出了一种用于生成最大纠缠的格林伯格-霍恩-泽林格（GHZ）原子态以测试量子非定域性的方案。在该方案中，三个原子同时通过处于真空态的非共振腔。它们最初处于相同状态，因此在此过程中没有能量交换。腔辅助碰撞导致一个依赖于集体原子激发的相移。原则上，该方案可以推广到生成N原子GHZ态。该方案对腔衰减不敏感，且仅需要一个腔，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。
