Open AccessHong−Ou−Mandel dip measurements of polarization-entangled photon pairs at 1550 nm
Author(s) -
Yan Xue,
Akio Yoshizawa,
Hidemi Tsuchida
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.008182
Subject(s) - quantum entanglement , physics , lithium niobate , polarization (electrochemistry) , photon , optics , photon entanglement , quantum optics , photon polarization , quantum , quantum mechanics , chemistry
We performed a quantum interference experiment using two polarization-entangled photon pairs at 1550 nm, created in periodically poled lithium niobate waveguides. Using four-fold coincidences, a Hong-Ou-Mandel dip at diagonal polarization was observed with a visibility of 74.5% before subtracting accidental coincidences. This experiment lays a foundation for demonstrating polarization-based entanglement swapping and for realizing a quantum relay.