Observation of the dynamical Casimir effect in a superconducting circuit

C. M. Wilson (), G. Johansson, A. Pourkabirian, M. Simoen, J. R. Johansson, T. Duty, F. Nori and P. Delsing
Additional contact information
C. M. Wilson: Chalmers University of Technology, Göteborg 412 96+, Sweden
G. Johansson: Chalmers University of Technology, Göteborg 412 96+, Sweden
A. Pourkabirian: Chalmers University of Technology, Göteborg 412 96+, Sweden
M. Simoen: Chalmers University of Technology, Göteborg 412 96+, Sweden
J. R. Johansson: Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198, Japan
T. Duty: University of New South Wales, Sydney, New South Wales 2052, Australia
F. Nori: Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198, Japan
P. Delsing: Chalmers University of Technology, Göteborg 412 96+, Sweden

Nature, 2011, vol. 479, issue 7373, 376-379

Abstract: Casimir on the move Two mirrors held parallel to each other in a vacuum experience an attractive force, known as the Casimir effect, which combines aspects of quantum vacuum behaviour with relativity. The force arises when vacuum fluctuations — virtual particles flitting in and out of existence — reduce the radiation pressure between the plates and generate an inward force. The static effect has been well studied, but theory also predicts a dynamical Casimir effect arising from a mismatch of vacuum modes in time rather than space. This paper presents the first observation of this phenomenon in a superconducting circuit.

Date: 2011
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DOI: 10.1038/nature10561

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