title: Broadband source of telecom-band polarization-entangled photon-pairs for wavelength-multiplexed entanglement distribution.
abstract: Studies on telecom-band entangled photon-pair sources for entanglement distribution have so far focused on their narrowband operations. Fiber-based sources are seriously limited by spontaneous Raman scattering while sources based on quasi-phase-matched crystals or waveguides are usually narrowband because of long device lengths and/or operations far from degeneracy. An entanglement distributor would have to multiplex many such narrowband sources before entanglement distribution to fully utilize the available fiber transmission bandwidth. In this work, we demonstrate a broadband source of polarization-entangled photon-pairs suitable for wavelength-multiplexed entanglement distribution over optical fiber. We show that our source is potentially capable of simultaneously supporting up to forty-four independent wavelength channels.
authors.affiliation: Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan. hanchuen@ginjo.t.u-tokyo.ac.jp
authors.forename: Han Chuen
authors.initials: HC
authors.lastname: Lim
authors.forename: Akio
authors.initials: A
authors.lastname: Yoshizawa
authors.forename: Hidemi
authors.initials: H
authors.lastname: Tsuchida
authors.forename: Kazuro
authors.initials: K
authors.lastname: Kikuchi