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理论物理通讯：英文版

Entanglement of Non-symmetric Two Atomic Qubits Induced by a Coherent State Field

LI ., Jun-Gang, Zou, Jian JIAN, Cai, Jin-Fang, Shao

Published Jan 1, 2006• 1 citation
OpenAlex

Abstract

二原子 qubits 的纠纷，它被联合到一个协调状态与不同政变石楠删除，被学习。同时发生的动态进化，测量在二 qubits 之间的纠纷的度，被阴谋对放大 timegt。甚至当他们开始处于大多数混合状态被准备时，二 qubits 能由协调州的领域被纠缠，这被发现，并且为很弱的地，大多数混合状态能更容易比一些纯状态被纠缠。在 thequbits 之间的纠纷易感知地取决于原子政变石楠的相对差别和这块地的吝啬的光子数字，这也被发现。

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二原子 qubits 的纠纷，它被联合到一个协调状态与不同政变石楠删除，被学习。同时发生的动态进化，测量在二 qubits 之间的纠纷的度，被阴谋对放大 timegt。甚至当他们开始处于大多数混合状态被准备时，二 qubits 能由协调州的领域被纠缠，这被发现，并且为很弱的地，大多数混合状态能更容易比一些纯状态被纠缠。在 thequbits 之间的纠纷易感知地取决于原子政变石楠的相对差别和这块地的吝啬的光子数字，这也被发现。
We study the behaviour of the correlation robustness of two spatially isolated charge-qubits started initially with a maximally correlated nonsymmetric Bell-state. Each charged qubit is coupled individually to a superconducting resonator coherent field. The dynamics of the qubit-resonator quantum correlations, based on trace-norm measurement-induced non-locality (MIN) and Bures distance entanglement, are investigated under the effects of the qubit-resonator interactions, intrinsic decoherence, initial coherent intensity cavity as well as of the qubit-resonator detuning. It is found that the trace-norm MIN correlation can be enhanced by the initial coherent field intensity and the detuning. The MIN is more robust, against the qubit-resonator interactions and the decoherence, than the Bures distance entanglement. Furthermore, the correlation robustness analysed for the different cases of the coherent states depends not only on the intrinsic decoherence but also on the coherent states and the qubit-resonator detuning.