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Generation of steady entanglement via unilateral qubit driving in bad cavities

机译:通过坏腔中的单边量子位驱动产生稳定的纠缠

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摘要

We propose a scheme for generating an entangled state for two atoms trapped in two separate cavities coupled to each other. The scheme is based on the competition between the unitary dynamics induced by the classical fields and the collective decays induced by the dissipation of two non-local bosonic modes. In this scheme, only one qubit is driven by external classical fields, whereas the other need not be manipulated via classical driving. This is meaningful for experimental implementation between separate nodes of a quantum network. The steady entanglement can be obtained regardless of the initial state, and the robustness of the scheme against parameter fluctuations is numerically demonstrated. We also give an analytical derivation of the stationary fidelity to enable a discussion of the validity of this regime. Furthermore, based on the dissipative entanglement preparation scheme, we construct a quantum state transfer setup with multiple nodes as a practical application.
机译:我们提出了一种方案,用于为陷在彼此耦合的两个独立腔中的两个原子生成一个纠缠态。该方案基于经典场引起的单位动力学与由两个非局部玻色子模式的耗散引起的集体衰变之间的竞争。在这种方案中,只有一个量子位是由外部经典场驱动的,而另一个量子位不需要通过经典驱动来操纵。这对于量子网络的各个节点之间的实验实现是有意义的。无论初始状态如何,都可以获得稳定的纠缠,并通过数值证明了该方案针对参数波动的鲁棒性。我们还给出了静态保真度的分析推导,以便能够对该制度的有效性进行讨论。此外,基于耗散纠缠制备方案,我们构建了具有多个节点的量子状态转移装置作为实际应用。

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