Journal article

Photonic quantum transport in a nonlinear optical fiber

  • Hafezi, M. Physics Department, Harvard University - Cambridge, USA - Joint Quantum Institute, University of Maryland, College Park, USA
  • Chang, D. E. Center for the Physics of Information and Institute for Quantum Information, California Institute of Technology - Pasadena, USA
  • Gritsev, Vladimir Physics Department, Harvard University - Cambridge, USA - Physics Department, University of Fribourg, Switzerland
  • Demler, Eugene A. Physics Department, Harvard University - Cambridge, USA
  • Lukin, Mikhail D. Physics Department, Harvard University - Cambridge, USA
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Published in:
  • EPL - Europhysics Letters. - 2011, vol. 94, no. 5, p. 54006
English We theoretically study the transmission of few-photon quantum fields through a strongly nonlinear optical medium. We develop a general approach to investigate nonequilibrium quantum transport of bosonic fields through a finite-size nonlinear medium and apply it to a recently demonstrated experimental system where cold atoms are loaded in a hollow-core optical fiber. We show that when the interaction between photons is effectively repulsive, the system acts as a single-photon switch. In the case of attractive interaction, the system can exhibit either antibunching or bunching, associated with the resonant excitation of bound states of photons by the input field. These effects can be observed by probing statistics of photons transmitted through the nonlinear fiber.
Faculté des sciences et de médecine
Département de Physique
  • English
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