Title :
Compact sagnac-type source for entangled photon pairs
Author :
Hentschel, M. ; Huebel, H. ; Poppe, A. ; Zeilinger, A.
Author_Institution :
Inst. for Quantum Opt. & Quantum Inf., Austrian Acad. of Sci., Vienna, Austria
Abstract :
Sources of entangled photon pairs serve as basis for many quantum information experiments, such as quantum computing or quantum key distribution (QKD). Especially in the field of QKD a popular wavelength combination is 810 and 1550nm, generated by spontaneous parametric down conversion (SPDC). Previous schemes facilitated two nonlinear crystals behind each other, hence limiting the propagation length to a few millimeters. In this work, the authors present a novel implementation of a Sagnac-type photon source designed for operation at three wavelengths, obviating the need for any active stabilization loops. Due to the compact design and excellent stability properties it is a versatile tool for quantum experiments.
Keywords :
photons; quantum entanglement; Sagnac type photon source; active stabilization loop; compact Sagnac-type source; entangled photon pairs; quantum information; spontaneous parametric down conversion; wavelength 1550 nm; wavelength 810 nm; Bandwidth; Laser excitation; Nonlinear optics; Optical fiber polarization; Optical interferometry; Optical pumping; Photonic crystals; Quantum computing; Quantum entanglement; Sagnac interferometers;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192454
