Resonance Fluorescence of a Single Artificial Atom

Science  12 Feb 2010:
Vol. 327, Issue 5967, pp. 840-843
DOI: 10.1126/science.1181918

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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.

  • This author is on leave from Physical-Technical Institute, Tashkent 100012, Uzbekistan.

  • This author is on leave from Lebedev Physical Institute, Moscow 119991, Russia.

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