Nanoampere pumping of Cooper pairs

Details Nanoampere pumping of Cooper pairs Nanoampere pumping of Cooper pairs

2006-12-21

arxiv.org/abs/cond-mat/0612556v1

Applied Physics Letters 90 082102 (2007).

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1063/1.2709967

We have employed a tunable Cooper-pair transistor, the sluice, with radio frequency control to pump current over a resistive circuit. We find that the charge transferred per pumping cycle can be controlled with the resolution of a single Cooper-pair up to hundreds of pairs. The achieved nanoampere current features more than an order of magnitude improvement over the previously reported results and it is close to the theoretical maximum value for the measured sample.

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