Fast and Accurate Single-Island Charge Pump: Implementation of a Cooper Pair Pump
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© 2003 American Physical Society (APS). http://www.aps.org/
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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177003/1-4
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Physical Review Letters, Volume 91, Issue 17
Abstract
We introduce a Cooper pair “sluice” for the implementation of a frequency-locked current source. The device consists of two mesoscopic SQUIDs and of a single superconducting island with a gate. We demonstrate theoretically that it is possible to obtain a current as high as 0.1 nA at better than ppm accuracy via periodically modulating both the gate charge and the effective Josephson coupling. We find that the device is tolerant against background charge noise and operates well even in a dissipative environment. The effect of the imperfect suppression of the Josephson coupling and the finite operating frequency are also investigated.Description
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Niskanen, Antti O. & Pekola, Jukka & Seppä, Heikki. 2003. Fast and Accurate Single-Island Charge Pump: Implementation of a Cooper Pair Pump. Physical Review Letters. Volume 91, Issue 17. 177003/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.91.177003.