"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."