title: Interference of single photons from two separate semiconductor quantum dots.
abstract: We demonstrate and characterize interference between discrete photons emitted by two separate semiconductor quantum dot states in different samples excited by a pulsed laser. Their energies are tuned into resonance using strain. The photons have a total coalescence probability of 18.1% and the coincidence rate is below the classical limit. Postselection of coincidences within a narrow time window increases the coalescence probability to 47%. The probabilities are reduced from unity because of dephasing and the postselection value is also reduced by the detector time response.
authors.affiliation: Joint Quantum Institute, National Institute of Standards and Technology & University of Maryland, Gaithersburg, Maryland, USA. edward.flagg@nist.gov
authors.forename: Edward B
authors.initials: EB
authors.lastname: Flagg
authors.forename: Andreas
authors.initials: A
authors.lastname: Muller
authors.forename: Sergey V
authors.initials: SV
authors.lastname: Polyakov
authors.forename: Alex
authors.initials: A
authors.lastname: Ling
authors.forename: Alan
authors.initials: A
authors.lastname: Migdall
authors.forename: Glenn S
authors.initials: GS
authors.lastname: Solomon