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Physical Review A

Publisher's Note: Preparation of Greenberger-Horne-Zeilinger entangled states with multiple superconducting quantum-interference device qubits or atoms in cavity QED [Phys. Rev. A70, 062323 (2004)]

Chui‐Ping Yang, Siyuan Han

Published Jan 7, 2005• 0 citations
Publisher

Abstract

Received 30 December 2004DOI:https://doi.org/10.1103/PhysRevA.71.019901©2005 American Physical Society
DOI
10.1103/physreva.71.019901

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A scheme is proposed for generating Greenberger-Horne-Zeilinger (GHZ) entangled states of multiple superconducting quantum-interference device (SQUID) qubits by the use of a microwave cavity. The scheme operates essentially by creating a single photon through an auxiliary SQUID built in the cavity and performing a joint multiqubit phase shift with assistance of the cavity photon. It is shown that entanglement can be generated using this method, deterministic and independent of the number of SQUID qubits. In addition, we show that the present method can be applied to preparing many atoms in a GHZ entangled state, with tolerance to energy relaxation during the operation.
一个其他的计划为产生 theGreenberg-Horne-Zeilinger (GHZ ) 被建议， W 与多重 superconductingquantum 干扰纠缠的状态打字一块单个模式的微波洞地里的设备(枪乌) qubits。在这个计划，没有在枪乌和洞之间的量信息的转移，洞总是在真空，因此，洞的质量上的要求极大地被松开。另外，在 W 的产生的过程期间纠缠了状态，现在的方法不包含中间的层次的真实刺激。因此，由于精力，中介的松驰铺平的 decoherence 被最小化。