Dressed collective qubit states and the Tavis-Cummings model in circuit QED

J.M. Fink, R. Bianchetti, M. Baur, M. Göppl, L. Steffen, S. Filipp, P. Leek, A. Blais, A. Wallraff, Physical Review Letters 103 (2009).


Journal Article | Published
Author
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Abstract
We present an ideal realization of the Tavis-Cummings model in the absence of atom number and coupling fluctuations by embedding a discrete number of fully controllable superconducting qubits at fixed positions into a transmission line resonator. Measuring the vacuum Rabi mode splitting with one, two, and three qubits strongly coupled to the cavity field, we explore both bright and dark dressed collective multiqubit states and observe the discrete N scaling of the collective dipole coupling strength. Our experiments demonstrate a novel approach to explore collective states, such as the W state, in a fully globally and locally controllable quantum system. Our scalable approach is interesting for solid-state quantum information processing and for fundamental multiatom quantum optics experiments with fixed atom numbers.
Publishing Year
Date Published
2009-08-17
Journal Title
Physical Review Letters
Acknowledgement
This work was supported by SNF Grant No. 200021-111899 and ETHZ. P. J. L. was supported by the EU with a MC-EIF. A. B. was supported by NSERC, CIFAR, and the Alfred P. Sloan Foundation
Volume
103
Issue
8
IST-REx-ID

Cite this

Fink JM, Bianchetti R, Baur M, et al. Dressed collective qubit states and the Tavis-Cummings model in circuit QED. Physical Review Letters. 2009;103(8). doi:10.1103/PhysRevLett.103.083601
Fink, J. M., Bianchetti, R., Baur, M., Göppl, M., Steffen, L., Filipp, S., … Wallraff, A. (2009). Dressed collective qubit states and the Tavis-Cummings model in circuit QED. Physical Review Letters, 103(8). https://doi.org/10.1103/PhysRevLett.103.083601
Fink, Johannes M, R Bianchetti, Matthias Baur, M Göppl, L. Steffen, Stefan Filipp, Peter Leek, Alexandre Blais, and Andreas Wallraff. “Dressed Collective Qubit States and the Tavis-Cummings Model in Circuit QED.” Physical Review Letters 103, no. 8 (2009). https://doi.org/10.1103/PhysRevLett.103.083601.
J. M. Fink et al., “Dressed collective qubit states and the Tavis-Cummings model in circuit QED,” Physical Review Letters, vol. 103, no. 8, 2009.
Fink JM, Bianchetti R, Baur M, Göppl M, Steffen L, Filipp S, Leek P, Blais A, Wallraff A. 2009. Dressed collective qubit states and the Tavis-Cummings model in circuit QED. Physical Review Letters. 103(8).
Fink, Johannes M., et al. “Dressed Collective Qubit States and the Tavis-Cummings Model in Circuit QED.” Physical Review Letters, vol. 103, no. 8, American Physical Society, 2009, doi:10.1103/PhysRevLett.103.083601.

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