Cooper pair tunneling in circuits with substantial dissipation: the three-junction R-pump for single Cooper pairs

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We propose a circuit comprising a linear array of three small-capacitance superconducting tunnel junctions with miniature resistors (R > R_Q = h/4e^2 = 6.5 kOhm) attached to the ends of this array. Owing to the Coulomb blockade effect and the effect of dissipative environment on the supercurrent, this circuit enables the gate-controlled transfer of individual Cooper pairs. The first experiment on operating the Al-Cr Cooper pair R-pump is described.
Reported at International Workshop on "Macroscopic Quantum Coherence and Computing - MQC2" (14-17 June, 2000, Naples, Italy)

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Superconductivity, Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/17124

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0012177
 http://arxiv.org/abs/cond-mat/0012177

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arXiv