Stark effect and generalized Bloch-Siegert shift in a strongly driven two-level system

Jani Tuorila; Matti Silveri; Mika Sillanpää; Erkki Thuneberg; Yuriy Makhlin; Pertti Hakonen

doi:10.1103/PhysRevLett.105.257003

Stark effect and generalized Bloch-Siegert shift in a strongly driven two-level system

Jani Tuorila, Matti Silveri, Mika Sillanpää, Erkki Thuneberg, Yuriy Makhlin, Pertti Hakonen

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

87 Citations (Scopus)

Abstract

A superconducting qubit was driven in an ultrastrong fashion by an oscillatory microwave field, which was created by coupling via the nonlinear Josephson energy. The observed Stark shifts of the "atomic" levels are so pronounced that corrections even beyond the lowest-order Bloch-Siegert shift are needed to properly explain the measurements. The quasienergies of the dressed two-level system were probed by resonant absorption via a cavity, and the results are in agreement with a calculation based on the Floquet approach.

Original language	English
Article number	257003
Journal	Physical Review Letters
Volume	105
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.105.257003
Publication status	Published - 14 Dec 2010
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.105.257003

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AU - Silveri, Matti

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AU - Makhlin, Yuriy

AU - Hakonen, Pertti

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AB - A superconducting qubit was driven in an ultrastrong fashion by an oscillatory microwave field, which was created by coupling via the nonlinear Josephson energy. The observed Stark shifts of the "atomic" levels are so pronounced that corrections even beyond the lowest-order Bloch-Siegert shift are needed to properly explain the measurements. The quasienergies of the dressed two-level system were probed by resonant absorption via a cavity, and the results are in agreement with a calculation based on the Floquet approach.

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Stark effect and generalized Bloch-Siegert shift in a strongly driven two-level system

Abstract

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