论文标题
耗散工程三方Greenberger-Horne-Zeilinger状态中性原子
Dissipative engineering a tripartite Greenberger-Horne-Zeilinger state for neutral atoms
论文作者
论文摘要
多部分Greenberger-Horne-Zeilinger（GHz）状态是各种量子信息处理任务的必不可少的要素。在这里，我们提出了两个确定性的建议，以耗散中性原子系统中的三方GHz状态。第一个方案可以被视为最近工作的扩展。 M. Wintermantel，Y。Wang，G。Lochead，\ textit {et al}，{phys。莱特牧师。 \ textbf {124}，070503（2020）}]。借助多色驱动场和工程自发发射，具有奇数原子的多部分GHz状态以高效率产生。该方案有效地克服了对初始状态的依赖问题，但对Rydberg State的衰变敏感。在第二种情况下，我们利用Rydberg状态的自发发射为资源，因此可以通过同时整合非常规的Rydberg Pumping和Rydberg Antiblockade效应的稳定的三方GHz状态，其富裕度约为98美元\％$ $。
The multipartite Greenberger-Horne-Zeilinger (GHZ) states are indispensable elements for various quantum information processing tasks. Here we put forward two deterministic proposals to dissipatively prepare tripartite GHZ states in a neutral atom system. The first scheme can be considered as an extension of a recent work [T. M. Wintermantel, Y. Wang, G. Lochead, \textit{et al}, {Phys. Rev. Lett. \textbf{124}, 070503 (2020)}]. By virtue of the polychromatic driving fields and the engineered spontaneous emission, a multipartite GHZ state with odd numbers of atoms are generated with a high efficiency. This scheme effectively overcomes the problem of dependence on the initial state but sensitive to the decay of Rydberg state. In the second scenario, we exploit the spontaneous emission of the Rydberg states as a resource, thence a steady tripartite GHZ state with fidelity around $98\%$ can be obtained by simultaneously integrating the switching driving of unconventional Rydberg pumping and the Rydberg antiblockade effect.
