论文标题
电荷量化和检测器分辨率
Charge quantization and detector resolution
论文作者
论文摘要
电荷量化或缺失是量子电路理论中的一个中心主题，对预测的电路动力学产生了巨大的后果。最近，是否应将指控实际上描述为量化的问题已经重新引起了广泛的兴趣，但似乎矛盾的命题。在这里，我们打算通过争论最终的电荷量化不是固有的系统属性来调和这些不同的方法，而是取决于电荷检测器的空间分辨率。我们表明，可以通过超级流的相关性中的独特几何标志直接探测后者。我们在示例的Josephson结阵阵列中说明了这些发现，在该示例中，超级感动器机制中的运输电荷似乎是连续的。最后，我们评论了超导电路以外的电荷量化的潜在后果。
Charge quantization, or the absence thereof, is a central theme in quantum circuit theory, with dramatic consequences for the predicted circuit dynamics. Very recently, the question of whether or not charge should actually be described as quantized has enjoyed renewed widespread interest, with however seemingly contradictory propositions. Here, we intend to reconcile these different approaches, by arguing that ultimately, charge quantization is not an intrinsic system property, but instead depends on the spatial resolution of the charge detector. We show that the latter can be directly probed by unique geometric signatures in the correlations of the supercurrent. We illustrate these findings at the example Josephson junction arrays in the superinductor regime, where the transported charge appears to be continuous. Finally, we comment on potential consequences of charge quantization beyond superconducting circuits.
