Fast and accurate single-island charge pump: Implementation of a Cooper pair pump

Antti Niskanen, Jukka Pekola, Heikki Seppä

Research output: Contribution to journalArticleScientificpeer-review

53 Citations (Scopus)

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.
Original languageEnglish
JournalPhysical Review Letters
Volume91
Issue number17
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

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Keywords

  • Cooper pair pumping
  • Cooper pairs
  • SQUID
  • Josephson effect
  • Josephson junction

Cite this

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title = "Fast and accurate single-island charge pump: Implementation of a Cooper pair pump",
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.",
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author = "Antti Niskanen and Jukka Pekola and Heikki Sepp{\"a}",
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language = "English",
volume = "91",
journal = "Physical Review Letters",
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Fast and accurate single-island charge pump : Implementation of a Cooper pair pump. / Niskanen, Antti; Pekola, Jukka; Seppä, Heikki.

In: Physical Review Letters, Vol. 91, No. 17, 2003.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Fast and accurate single-island charge pump

T2 - Implementation of a Cooper pair pump

AU - Niskanen, Antti

AU - Pekola, Jukka

AU - Seppä, Heikki

PY - 2003

Y1 - 2003

N2 - 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.

AB - 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.

KW - Cooper pair pumping

KW - Cooper pairs

KW - SQUID

KW - Josephson effect

KW - Josephson junction

U2 - 10.1103/PhysRevLett.91.177003

DO - 10.1103/PhysRevLett.91.177003

M3 - Article

VL - 91

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

ER -