"Nondestructive detection of an optical photon"

  • Date: Dec 3, 2013
  • Time: 12:30 PM - 12:30 PM (Local Time Germany)
  • Speaker: Andreas Reiserer, Max-Planck-Institut für Quantenoptik, Abt. Quantendynamik
  • Room: Herbert Walther Lecture Hall
  • Host: MPQ
"We demonstrate a robust photon detector which does not rely on photon absorption. Instead, impinging light is reflected off an optical resonator containing a single atom in a superposition of two states. Upon reflection of a single photon, the phase of the superposition state is flipped, which unambiguously allows us to nondestructively detect the photon. The presented single-photon nonlinearity paves the way towards photonic quantum gates and the preparation of novel quantum states of light."
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