论文标题
量子点中的电子热电流波动
Electronic heat current fluctuations in a quantum dot
论文作者
论文摘要
使用非平衡绿色功能技术以有限频率，电压和温度计算的量子点中的热电流的波动。非对称热噪声表示为包含四个贡献的能量的积分，每个贡献包括传输幅度，电子孔对分布函数和能量差异因子。研究了量子点和储层之间耦合的不对称性的影响。突出显示热噪声的特征，并讨论了平衡和平衡量子点的平衡。在后一种情况下，在高传输极限内，热噪声与辐射功率谱密切相关，导致普兰克定律过平衡。讨论了测量热噪声的建议。
The fluctuations of the heat current in a quantum dot coupled to electron reservoirs are calculated at finite frequency, voltage and temperature using the nonequilibrium Green function technique. The non-symmetrized heat noise is expressed as an integral on energy containing four contributions, each of which includes transmission amplitudes, electron-hole pair distribution functions and energy difference factors. The effect of the asymmetry of the couplings between the quantum dot and the reservoirs is studied. Features of the heat noise are highlighted and discussed for an equilibrium and an out-of-equilibrium quantum dot. In the latter case and within the high transmission limit, the heat noise is closely related to the radiative power spectrum, leading to an out-of-equilibrium Planck's law. Proposals for the measurement of the heat noise are discussed.
