Giant cross-kerr effect for propagating microwaves induced by an artificial atom

Io Chun Hoi; Anton F. Kockum; Tauno Palomaki; Thomas M. Stace; Bixuan Fan; Lars Tornberg; Sankar R. Sathyamoorthy; Göran Johansson; Per Delsing; C. M. Wilson

doi:10.1103/PhysRevLett.111.053601

Giant cross-kerr effect for propagating microwaves induced by an artificial atom

Io Chun Hoi^*, Anton F. Kockum, Tauno Palomaki, Thomas M. Stace, Bixuan Fan, Lars Tornberg, Sankar R. Sathyamoorthy, Göran Johansson, Per Delsing, C. M. Wilson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the effective interaction between two microwave fields, mediated by a transmon-type superconducting artificial atom which is strongly coupled to a coplanar transmission line. The interaction between the fields and atom produces an effective cross-Kerr coupling. We demonstrate average cross-Kerr phase shifts of up to 20 degrees per photon with both coherent microwave fields at the single-photon level. Our results provide an important step toward quantum applications with propagating microwave photons.

Original language	English
Article number	053601
Journal	Physical Review Letters
Volume	111
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.111.053601
State	Published - 2 Aug 2013
Externally published	Yes

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10.1103/PhysRevLett.111.053601

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title = "Giant cross-kerr effect for propagating microwaves induced by an artificial atom",

abstract = "We investigate the effective interaction between two microwave fields, mediated by a transmon-type superconducting artificial atom which is strongly coupled to a coplanar transmission line. The interaction between the fields and atom produces an effective cross-Kerr coupling. We demonstrate average cross-Kerr phase shifts of up to 20 degrees per photon with both coherent microwave fields at the single-photon level. Our results provide an important step toward quantum applications with propagating microwave photons.",

author = "Hoi, {Io Chun} and Kockum, {Anton F.} and Tauno Palomaki and Stace, {Thomas M.} and Bixuan Fan and Lars Tornberg and Sathyamoorthy, {Sankar R.} and G{\"o}ran Johansson and Per Delsing and Wilson, {C. M.}",

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AU - Hoi, Io Chun

AU - Kockum, Anton F.

AU - Palomaki, Tauno

AU - Stace, Thomas M.

AU - Fan, Bixuan

AU - Tornberg, Lars

AU - Sathyamoorthy, Sankar R.

AU - Johansson, Göran

AU - Delsing, Per

AU - Wilson, C. M.

PY - 2013/8/2

Y1 - 2013/8/2

N2 - We investigate the effective interaction between two microwave fields, mediated by a transmon-type superconducting artificial atom which is strongly coupled to a coplanar transmission line. The interaction between the fields and atom produces an effective cross-Kerr coupling. We demonstrate average cross-Kerr phase shifts of up to 20 degrees per photon with both coherent microwave fields at the single-photon level. Our results provide an important step toward quantum applications with propagating microwave photons.

AB - We investigate the effective interaction between two microwave fields, mediated by a transmon-type superconducting artificial atom which is strongly coupled to a coplanar transmission line. The interaction between the fields and atom produces an effective cross-Kerr coupling. We demonstrate average cross-Kerr phase shifts of up to 20 degrees per photon with both coherent microwave fields at the single-photon level. Our results provide an important step toward quantum applications with propagating microwave photons.

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Giant cross-kerr effect for propagating microwaves induced by an artificial atom

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