Shot noise for resonant Cooper pair tunneling

被引:31
作者
Choi, MS
Plastina, F
Fazio, R
机构
[1] Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland
[2] Korea Inst Adv Study, Seoul 130012, South Korea
[3] Univ Palermo, INFM, NEST, I-90123 Palermo, Italy
[4] Univ Palermo, Dipartimento Sci Fis & Astron, I-90123 Palermo, Italy
[5] Univ Catania, INFM, NEST, I-95125 Catania, Italy
[6] Univ Catania, Dipartimento Metodol Fis & Chim, I-95125 Catania, Italy
关键词
D O I
10.1103/PhysRevLett.87.116601
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study intrinsic noise of current in a superconducting single-electron transistor, taking into account both coherence effects and Coulomb interaction near a Cooper pair resonance. Because of this interplay, the statistics of tunneling events deviates from the Poisson distribution and, more important, it shows even-odd asymmetry in the transmitted charge. The zero-frequency noise is suppressed significantly when the quasiparticle tunneling rates are comparable to the coherent oscillation frequency of Cooper pairs.
引用
收藏
页码:art. no. / 116601
页数:4
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