title: Dispersion-independent high-visibility quantum interference in ultrafast parametric down-conversion
abstract: We demonstrate the effective removal of intrinsic distinguishability between entangled-photon pairs in femtosecond spontaneous parametric down-conversion. High-visibility quantum interference is recovered (an increase to 96% from 17%) while preserving the high photon-flux density associated with the use of long nonlinear crystals. This new technique is expected to serve as a basic component in the preparation of multiphoton entangled states.
authors.affiliation: Quantum Imaging Laboratory, Department of Physics, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215, USA.
authors.initials: M
authors.lastname: Atature
authors.initials: AV
authors.lastname: Sergienko
authors.initials: BE
authors.lastname: Saleh
authors.initials: MC
authors.lastname: Teich