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Resonance Fluorescence of a Single Artificial Atom

Research output: Contribution to journalJournal article


  • O. Astafiev
  • A. M. Zagoskin
  • A. A. Abdumalikov
  • Yuri Pashkin
  • T. Yamamoto
  • K. Inomata
  • Y. Nakamura
  • J. S. Tsai
Journal publication date12/02/2010
Number of pages4
Original languageEnglish


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.