论文标题
非平衡噪声作为BCS - BEC跨界的成对隧道传输的探针
Nonequilibrium noise as a probe of pair-tunneling transport in the BCS--BEC Crossover
论文作者
论文摘要
转运现象中基本载体的检测是了解强相关量子物质的非平凡特性的最重要关键之一。在这里，我们提出了一种方法，可以在Bardeen-Cooper-Schrieffer到Bose-einstein Condensate交叉中识别出从非平衡噪声的强烈相互作用的费米中识别隧穿的电流载体。对于当前载体，噪声与电流的比例（FANO因子）可能是关键的探针。将密切相关的费米子与稀储层接触，从而在中间产生隧穿的电流。随着相互作用变得更强，相关的Fano因子从一一增加到两个，这反映了以下事实：显性传导通道从准片段隧道变为对隧道。
The detection of elementary carriers in transport phenomena is one of the most important keys to understand non-trivial properties of strongly-correlated quantum matter. Here we propose a method to identify the tunneling current carrier in strongly interacting fermions from nonequilibrium noise in the Bardeen-Cooper-Schrieffer to Bose--Einstein condensate crossover. The noise-to-current ratio, the Fano factor, can be a crucial probe for the current carrier. Bringing strongly-correlated fermions into contact with a dilute reservoir produces a tunneling current in between. The associated Fano factor increases from one to two as the interaction becomes stronger, reflecting the fact that the dominant conduction channel changes from the quasiparticle tunneling to the pair tunneling.
