Intensified antibunching via feedback-induced quantum interference

  • Yiping Lu /
  • Nicolas L. Naumann /
  • Javier Cerrillo /
  • Qing Zhao /
  • Andreas Knorr /
  • Alexander Carmele
Journal ar
Physical Review A
  • Volumen: 95
  • Número: 6
  • Fecha: 26 June 2017
  • ISSN: 24699934 24699926
  • Source Type: Journal
  • DOI: 10.1103/PhysRevA.95.063840
  • Document Type: Article
  • Publisher: American Physical
© 2017 American Physical Society.We numerically show that time-delayed coherent feedback controls the statistical output characteristics of driven quantum emitters. Quantum feedback allows us to enhance or suppress a wide range of classical and nonclassical features of the emitted quantum light. As an exemplary quantum system, we use a pumped cavity containing two emitters. By applying phase-selective feedback, we demonstrate that photon antibunching and bunching can be increased for a given set of parameters in orders of magnitude due to intrinsically and externally controllable quantum interferences. Our modeling is based on a fully non-Markovian quantum simulation of a structured photon continuum. We show that an approximative method in the Schrödinger picture allows a very good estimate for quantum feedback induced features for low pump rates.

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