title: Indistinguishable photon pairs from independent true chaotic sources.
abstract: Indistinguishability of events in quantum mechanics is manifested by interference between their probability amplitudes. We report a unique kind of interference occurring between indistinguishable events of photon-pair emission, where each photon of the pair is emitted from a distinct true chaotic light source and has a different energy. The indistinguishability results in an interference which is observed as an ultrafast modulation of the second-order coherence function, measured on a femtosecond time scale by two-photon absorption in a semiconductor photomultiplier tube.
authors.affiliation: Department of Electrical Engineering, Technion, Haifa 32000, Israel. nevet@tx.technion.ac.il
authors.forename: Amir
authors.initials: A
authors.lastname: Nevet
authors.forename: Alex
authors.initials: A
authors.lastname: Hayat
authors.forename: Pavel
authors.initials: P
authors.lastname: Ginzburg
authors.forename: Meir
authors.initials: M
authors.lastname: Orenstein