局域退相干下的贝尔不等式破坏与纠缠
Bell inequality violation versus entanglement in presence of local decoherence
摘要：
我们分析了两个量子比特的局域退相干对纠缠和贝尔不等式破坏的影响。消相干由Kraus算子描述，该算子考虑了在任意温度下的失相和能量弛豫。我们证明了在超导相位量子比特的实验中，纠缠的生存时间应该比贝尔不等式破坏的生存时间长得多。
英文摘要：
We analyze the effect of local decoherence of two qubits on their entanglement and the Bell inequality violation. Decoherence is described by Kraus operators, which take into account dephasing and energy relaxation at an arbitrary temperature. We show that in the experiments with superconducting phase qubits the survival time for entanglement should be much longer than for the Bell inequality violation.
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