All-electrical generation and control of odd-frequency s-wave Cooper pairs in double quantum dots
All-electrical generation and control of odd-frequency s-wave Cooper pairs in double quantum dots
复制标题
双量子点中奇频横波库珀对的全电产生与控制
DOI：
10.1103/physrevb.93.201402
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发表时间：
2016
影响因子：
3.7
通讯作者：
Y. Tanaka
中科院分区：
文献类型：
--
作者：
P. Burset;B. Lu;H. Ebisu;Y. Asano;Y. Tanaka
我们提出了一个全电学的实验装置来检测和操纵双量子点中奇频配对的振幅。当库珀对被注入到双点中，电子在不同的点中时，由于轨道对称性的破坏，导致了奇频对的振幅。当点能级与费米能量对齐时，即，共振时，非局部Andreev过程与奇频配对的存在直接相关。因此，可以通过调整电平位置来操纵它们的幅度。电导测量的非局部Andreev过程的检测有助于直接证明的奇频率对振幅的存在，并可使用当前的实验技术。
We propose an all-electrical experimental setup to detect and manipulate the amplitude of odd-frequency pairing in a double quantum dot. The odd-frequency pair amplitude is induced from the breakdown of orbital symmetry when Cooper pairs are injected in the double dot with electrons in different dots. When the dot levels are aligned with the Fermi energy, i.e., on resonance, nonlocal Andreev processes are directly connected to the presence of odd-frequency pairing. Therefore, their amplitude can be manipulated by tuning the level positions. The detection of nonlocal Andreev processes by conductance measurements contributes a direct proof of the existence of the odd-frequency pair amplitude and is available using current experimental techniques.