Quantum Network of Atom Clocks: A Possible Implementation with Neutral Atoms
Quantum Network of Atom Clocks: A Possible Implementation with Neutral Atoms
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DOI：
10.1103/physrevlett.117.060506
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发表时间：
2016-08-05
影响因子：
8.6
通讯作者：
Lukin, M. D.
中科院分区：
文献类型：
--
作者：
Komar, P.;Topcu, T.;Lukin, M. D.
我们提出了一种在空间分离的光学原子钟中创建完全纠缠的中性原子格林伯格-霍恩-蔡林格型状态的协议。在我们的方案中，局部运算利用里德伯激发之间的强偶极-偶极相互作用，从而产生涉及系综中所有原子的快速可靠的量子运算。远距离系综之间必要的纠缠是由单光子量子通道和集体增强的光-物质耦合介导的。这些技术可以用来创建最近提出的基于中性原子光学钟的量子时钟网络。我们具体分析了使用中性Yb系综实现该方案的可能性。
We propose a protocol for creating a fully entangled Greenberger-Horne-Zeilinger-type state of neutral atoms in spatially separated optical atomic clocks. In our scheme, local operations make use of the strong dipole-dipole interaction between Rydberg excitations, which give rise to fast and reliable quantum operations involving all atoms in the ensemble. The necessary entanglement between distant ensembles is mediated by single-photon quantum channels and collectively enhanced light-matter couplings. These techniques can be used to create the recently proposed quantum clock network based on neutral atom optical clocks. We specifically analyze a possible realization of this scheme using neutral Yb ensembles.