Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Fluxonium
T2 - single Cooper-pair circuit free of charge offsets
AU - Manucharyan, Vladimir E.
AU - Koch, Jens
AU - Glazman, Leonid
AU - Devoret, Michel H.
PY - 2009/10/2
Y1 - 2009/10/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=70349682719&partnerID=8YFLogxK
U2 - 10.1126/science.1175552
DO - 10.1126/science.1175552
M3 - Journal article
AN - SCOPUS:70349682719
VL - 326
SP - 113
EP - 116
JO - Science
JF - Science
SN - 0036-8075
IS - 5949
ER -