arXiv:1002.4944 · Science

Resonance Fluorescence of a Single Artificial Atom

O. V. Astafiev, Alexandre M. Zagoskin, A. A. Abdumalikov, Yu. A. Pashkin, Tsuyoshi Yamamoto, K. Inomata, Yasunobu Nakamura, Jaw-Shen Tsai

Published Feb 11, 2010• 690 citations

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Abstract

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.

DOI: 10.1126/science.1181918

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