量子纠缠
量子退相干
量子位元
W州
多体纠缠
物理
量子力学
压扁的纠缠
群集状态
纠缠蒸馏
贝尔州
纠缠证人
量子
作者
Jun‐Hong An,Shun-Jin Wang,Hong‐Gang Luo
标识
DOI:10.1016/j.physa.2007.04.008
摘要
We use the quantum jump approach to study the entanglement dynamics of a quantum register, which is composed of two or three dipole–dipole coupled two-level atoms, interacting with a common environment. Our investigation of entanglement dynamics reflects that the environment has dual actions on the entanglement of the qubits in the model. While the environment destroys the entanglement induced by the coherent dipole–dipole interactions, it can produce stable entanglement between the qubits prepared initially in a separable state. The analysis shows that it is the entangled decoherence-free states contained as components in the initial state that contribute to the stable entanglement. Our study indicates how the environmental noise produces the entanglement and exposes the interplay of environmental noise and coherent interactions of qubits on the entanglement.
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