Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box

Details Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box

2004-07-13

arxiv.org/abs/cond-mat/0407325v1

Nature (London) 431, 162-167 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 4 figures, accepted for publication in Nature, embargo does apply, version with high resolution figures available at:

Scientific paper

10.1038/nature02851

Under appropriate conditions, superconducting electronic circuits behave quantum mechanically, with properties that can be designed and controlled at will. We have realized an experiment in which a superconducting two-level system, playing the role of an artificial atom, is strongly coupled to a single photon stored in an on-chip cavity. We show that the atom-photon coupling in this circuit can be made strong enough for coherent effects to dominate over dissipation, even in a solid state environment. This new regime of matter light interaction in a circuit can be exploited for quantum information processing and quantum communication. It may also lead to new approaches for single photon generation and detection.

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