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Dynamics of Coherent and Incoherent Emission from an Artificial Atom in a 1D Space

Research output: Contribution to journalJournal article

Published

  • A. A. Abdumalikov
  • O. V. Astafiev
  • Yuri Pashkin
  • Y. Nakamura
  • J. S. Tsai
Article number043604
Journal publication date22/07/2011
JournalPhysical review letters
Journal number4
Volume107
Number of pages4
Pages-
Original languageEnglish

Abstract

We study dynamics of a two-level superconducting quantum system, analogous to a natural atom in an open space, by measuring the evolution of its coherent and incoherent emission. The emitted waves containing full information about the states of the artificial atom are efficiently collected due to strong atom-transmission-line coupling. This allows us to do simultaneous measurements of all the quantum state projections and perform a full characterization of the system. We derive coherence times and extract the two-time correlation function from the dynamics of the coherent emission.