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arxiv: 1002.4944 · v1 · pith:WMHYWNY4new · submitted 2010-02-26 · ❄️ cond-mat.supr-con · cond-mat.mes-hall· physics.optics· quant-ph

Resonance Fluorescence of a Single Artificial Atom

O. Astafiev , A. M. Zagoskin , A. A. Abdumalikov Jr. , Yu. A. Pashkin , T. Yamamoto , K. Inomata , Y. Nakamura , J. S. Tsai This is my paper
classification ❄️ cond-mat.supr-con cond-mat.mes-hallphysics.opticsquant-ph
keywords artificialatomopticsquantumwaveselectromagneticfluorescenceopen
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An atom in open space can be detected by means of resonant absorption and reemission of electromagnetic waves, known as resonance fluorescence, which is a fundamental phenomenon of quantum optics. We report on the observation of scattering of propagating waves by a single artificial atom. The behavior of the artificial atom, a superconducting macroscopic two-level system, is in a quantitative agreement with the predictions of quantum optics for a pointlike scatterer interacting with the electromagnetic field in one-dimensional open space. The strong atom-field interaction as revealed in a high degree of extinction of propagating waves will allow applications of controllable artificial atoms in quantum optics and photonics.

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