Stark Effect and Generalized Bloch-Siegert Shift in a Strongly Driven Two-Level System

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© 2010 American Physical Society (APS). This is the accepted version of the following article: Tuorila, Jani & Silveri, Matti & Sillanpää, Mika A. & Thuneberg, Erkki & Makhlin, Yuriy & Hakonen, Pertti. 2010. Stark Effect and Generalized Bloch-Siegert Shift in a Strongly Driven Two-Level System. Physical Review Letters. Volume 105, Issue 25. 257003/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.105.257003, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.257003
Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2010
Major/Subject
Mcode
Degree programme
Language
en
Pages
257003/1-4
Series
Physical Review Letters, Volume 105, Issue 25
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.
Description
Keywords
quantum dots, Josephson qubits, superconductivity, oscillatory microwave fields
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Citation
Tuorila, Jani & Silveri, Matti & Sillanpää, Mika A. & Thuneberg, Erkki & Makhlin, Yuriy & Hakonen, Pertti. 2010. Stark Effect and Generalized Bloch-Siegert Shift in a Strongly Driven Two-Level System. Physical Review Letters. Volume 105, Issue 25. 257003/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.105.257003.