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

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

2000-12-11

arxiv.org/abs/cond-mat/0012177v1

Physics

Condensed Matter

Superconductivity

Reported at International Workshop on "Macroscopic Quantum Coherence and Computing - MQC2" (14-17 June, 2000, Naples, Italy)

Scientific paper

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.

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