Fluxonium:single Cooper-pair circuit free of charge offsets

Manucharyan, Vladimir E. and Koch, Jens and Glazman, Leonid and Devoret, Michel H. (2009) Fluxonium:single Cooper-pair circuit free of charge offsets. Science, 326 (5949). pp. 113-116. ISSN 0036-8075

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Abstract

The promise of single Cooper-pair quantum circuits based on tunnel junctions for metrology and quantum information applications is severely limited by the influence of offset charges: random, slowly drifting microscopic charges inherent in many solid-state systems. By shunting a small junction with the Josephson kinetic inductance of a series array of large-capacitance tunnel junctions, thereby ensuring that all superconducting islands are connected to the circuit by at least one large junction, we have realized a new superconducting artificial atom that is totally insensitive to offset charges. Yet its energy levels manifest the anharmonic structure associated with single Cooper-pair effects, a useful component for solid-state quantum computation.

Item Type:
Journal Article
Journal or Publication Title:
Science
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/aacsb/disciplinebasedresearch
Subjects:
ID Code:
58537
Deposited By:
Deposited On:
19 Sep 2012 09:24
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Dec 2020 12:05