论文标题
介质环中的粘结电流 - 由于经典和量子噪声而引起的破坏签名
Bond current in a mesoscopic ring -- signature of decoherence due to classical and quantum noise
论文作者
论文摘要
当通过AHARONOV-BOHM通量螺纹时，三个位点的介质环为键盘的精确计算提供了理想的设置。粘结电流是量子相的相干性能的可测量结果。但是，当将环与环境接触时，噪声阻碍了连贯性。此处分析了这种相干性到赋形的跃迁，以针对经典（高斯和电报）和量子噪声进行详细分析，并且当量子噪声受散发性的玻璃孔汉密尔顿（Hamiltonian）的散发性量子量子机制时，进行了比较评估。
A three-site mesoscopic ring provides an ideal setting for an exact calculation of the bond current when the ring is threaded by an Aharonov-Bohm flux. The bond current is a measurable outcome of the coherent properties of the quantum phase. However the coherence is impeded by noise when the ring is put in contact with an environment. This coherence-to-incoherence transition is analyzed in detail here for both classical (Gaussian and telegraphic) and quantum noise and a comparative assessment is made when the quantum noise is governed by a spin-boson Hamiltonian of dissipative quantum mechanics.
