Pelton, MatthewMarsden, PhilipLjunggren, DanielTengner, MariaKarlsson, AndersFragemann, AnnaCanalias, CarlotaLaurell, Fredrik2023-08-142023-08-142004-07-26Pelton, Matthew, Philip Marsden, Daniel Ljunggren, Maria Tengner, Anders Karlsson, Anna Fragemann, Carlota Canalias, and Fredrik Laurell. “Bright, Single-Spatial-Mode Source of Frequency Non-Degenerate, Polarization-Entangled Photon Pairs Using Periodically Poled KTP.” Optics Express 12, no. 15 (July 26, 2004): 3573–80. https://doi.org/10.1364/OPEX.12.003573.https://doi.org/10.1364/OPEX.12.003573http://hdl.handle.net/11603/29221We use two perpendicular crystals of periodically-poled KTP to directly generate polarization-entangled photon pairs, the majority of which are emitted into a single Gaussian spatial mode. The signal and idler photons have wavelengths of 810 nm and 1550 nm, respectively, and the photon-pair generation rate is 1.2×10⁷ sec⁻¹ for a pump power of 62 mW. The apparatus is compact, flexible, and easily to use.8 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Quantum opticsperiodically-poled KTPMultiphoton processesText