Nonequilibrium entanglement and noise in coupled qubits
Nonequilibrium entanglement and noise in coupled qubits
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DOI：
10.1103/physrevb.75.045340
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发表时间：
2007-01-01
影响因子：
3.7
通讯作者：
Brandes, T.
中科院分区：
文献类型：
--
作者：
Lambert, N.;Aguado, R.;Brandes, T.
研究了两个库仑耦合双量子点在稳态非平衡输运条件下的电荷纠缠和噪声谱。在输运机制中，由于量子芝诺局域化或相互作用引起的能隙对隧穿的抑制，纠缠表现出明显的开关阈值和各种限制。我们还讨论了点间电流关联作为一个可能的指标的纠缠在传输实验。
We study the charge entanglement and noise spectrum of two Coulomb-coupled double quantum dots under stationary nonequilibrium transport conditions. In the transport regime, the entanglement exhibits a clear switching threshold and various limits due to suppression of tunneling by quantum Zeno localization or by an interaction-induced energy gap. We also discuss the interdot current correlation as a possible indicator of the entanglement in transport experiments.