Abstract:
Parametric down-conversion can be used to create
pairs of photons that are entangled in energy and time. Photons entangled in this way are emitted at the
same time, but with a coherent superposition of such times, which can violate Bell’s inequality and can be used in quantum key
distribution, for example. We have
recently introduced the idea of entangled photon holes, in which a two-photon
absorbing medium absorbs pairs of photons from two laser beams at the same
time, with a coherent superposition of those times. Entangled photon holes can also violate Bell’s inequality and may have some advantages in quantum
communications. A recent experimental demonstration
of entangled photon holes will also be discussed.
Joint Quantum Optics Condensed Matter Physics Seminar and QUINF seminar
(PLEASE NOTE NON-STANDARD DATE AND PLACE)