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Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
Open accessAbstract
We measure the dispersive energy-level shift of an LC resonator magnetically coupled to a superconducting qubit, which clearly shows that our system operates in the ultrastrong coupling regime. The large mutual kinetic inductance provides a coupling energy of ≈ 0.82 GHz, requiring the addition of counter-rotating-wave terms in the description of the Jaynes-Cummings model. We find a 50 MHz Bloch-Siegert shift when the qubit is in its symmetry point, fully consistent with our analytical model.
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Citations
Cites
Circuit quantum electrodynamics in the ultrastrong-coupling regime
Niemczyk, T., Deppe, F., Huebl, H., Menzel, E. P., Hocke, F., Schwarz, M. J., Garcia-Ripoll, J. J., Zueco, D., Hümmer, T., Solano, E., et al. (2010) · Nature Physics · doi:10.1038/nphys1730 · Cited by 1,324
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Cited by
Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems
Xiang, Z.-L., Ashhab, S., You, J. Q., & Nori, F. (2013) · Reviews of Modern Physics · doi:10.1103/revmodphys.85.623 · Cited by 1,514
Superconducting Qubits: Current State of Play
Kjaergaard, M., Schwartz, M. E., Braumüller, J., Krantz, P., Wang, J. I.-J., Gustavsson, S., & Oliver, W. D. (2020) · Annual Review of Condensed Matter Physics · doi:10.1146/annurev-conmatphys-031119-050605 · Cited by 1,544
Atomic physics and quantum optics using superconducting circuits
You, J. Q., & Nori, F. (2011) · Nature · doi:10.1038/nature10122 · Cited by 1,311
Microwave photonics with superconducting quantum circuits
Gu, X., Kockum, A. F., Miranowicz, A., Liu, Y.-X., & Nori, F. (2017) · Physics Reports · doi:10.1016/j.physrep.2017.10.002 · Cited by 1,307
Deep Strong Coupling Regime of the Jaynes-Cummings Model
Casanova, J., Romero, G., Lizuain, I., García-Ripoll, J. J., & Solano, E. (2010) · Physical Review Letters · doi:10.1103/physrevlett.105.263603 · Cited by 535
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Metadata
- Authors
- Forn-Díaz, P., Lisenfeld, J., Marcos, D., García-Ripoll, J. J., Solano, E., Harmans, C. J. P. M., & Mooij, J. E.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-11-30
- Volume
- 105
- Issue
- 23
- Pages
- 237001-237001
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2130074705
- Cited by
- 729
- References
- 1
- FWCI
- 39.11
- Type
- journal article
- Language
- en
- Open access
- green
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- Forn-Díaz, P., Lisenfeld, J., Marcos, D., García-Ripoll, J. J., Solano, E., Harmans, C. J. P. M., & Mooij, J. E. (2010). Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime. Physical Review Letters. https://doi.org/10.1103/physrevlett.105.237001
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