A very recent article [(1) E. Zakka-Bajjani et al., PRL104, 206802 (2010)] has addressed the problem of how the statistics of electrons crossing a quantum conductor influences that of the photons they emit. It is however not clear that the detection used in [1] is sensitive to emitted photons and not to the overall electromagnetic fluctuations, which include vacuum fluctuations. We show that the proof in [1] that non-symmetrized noise is detected is erroneous: supposing that the detection simply takes the square of the voltage, i.e. is sensitive to vacuum fluctuations, leads to identical results. We demonstrate that all the results can be explained in terms of usual gaussian voltage fluctuations instead of photon statistics. Finally, it is found in [1] that the photon noise is gaussian for a tunnel junction, for which the electron counting statistics is poissonian. We show that this result is beyond the experimental sensitivity by at least one order of magnitude, and thus is also incorrect.
Comment on "Tunnel Window's Imprint on Dipolar Field Distributions"
在最近的一封信中，Alonso et al.（Phys. Rev. Lett. 87，097205（2001））给出了用于相互作用偶极子的蒙特卡罗模拟。短时弛豫是由简单的噪声场引起的，均匀地作用在小宽度的“能量窗口”上（以模拟波动的核自旋偏置）。然而，隧穿纳米磁体或磁性分子（以及“隧穿孔”形成）的整体的隧穿弛豫的物理是不同的，在这里我们讨论这一点。
Comment on "Direct Measurement of Auger Electrons Emitted from a Semiconductor Light-Emitting Diode under Electrical Injection: Identification of the Dominant Mechanism for Efficiency Droop" [Phys. Rev. Lett. 110, 177406 (2013)]
Comment on "Influence of image forces on the electron transport in ferroelectric tunnel junctions"
Udalov和Beloborodov在最近的论文[Phys. Rev. B 95，134106（2017）; Phys. Rev. B 96，125425（2017）]中报告了图像力对铁电隧道结电导的强烈影响。特别是，作者指出，有增强的电阻效应，由于在对称隧道结在非零偏置的极化滞后。这一猜想似乎是一个突破-常识是相当大的影响，线性过电压偏置，只发生在非对称结。我们发现，图像力对铁电隧道结电导的影响是高度高估，由于忽略了特征铁电弛豫和电子隧穿时间之间的差异。我们认为，显着增强的电阻效应，从图像的力量，由于极化滞后在对称隧道结在非零偏压可能只会观察到通过势垒的慢电子隧穿。这同样适用于具有铁电势垒的磁性隧道结，也由Udalov等人考虑：对于典型的电子隧穿时间，由于图像力，磁电效应没有显著增加。Udalov和Beloborodov完全错过了自20世纪50年代以来像力理论的发展，他们忘记了电子在凝聚态物质中的运动速度比原子快得多。我们强调，考虑电荷隧穿的动力学效应可以带来新的见解铁电隧道结的物理。
