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Phase-stable source of polarization-entangled photons in a linear double-pass configuration

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Phase-stable source of polarization-entangled photons in a linear double-pass configuration (940,1Kb)
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10.1364/OE.21.011943
 
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hdl:2117/20230

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Steinlechner, F.
Ramelow, Sven
Jofre, Martí
Gilaberte, Marta
Jennewein, Thomas
Pérez Torres, JuanMés informacióMés informacióMés informació
Mitchell, Morgan W.
Pruneri, Valerio
Document typeArticle
Defense date2013-05
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
ProjectPHORBITECH - A Toolbox for Photon Orbital Angular Momentum Technology (EC-FP7-255914)
QIT4QAD - Photonic Quantum Information Technology and the Foundations of Quantum Physics in Higher Dimensions (EC-FP7-227844)
AQUMET - Atomic Quantum Metrology (EC-FP7-280169)
Abstract
We demonstrate a compact, robust, and highly efficient source of polarization-entangled photons, based on linear bi-directional down-conversion in a novel ‘folded sandwich’ configuration. Bi-directionally pumping a single periodically poled KTiOPO4 (ppKTP) crystal with a 405-nm laser diode, we generate entangled photon pairs at the non-degenerate wavelengths 784 nm (signal) and 839 nm (idler), and achieve an unprecedented detection rate of 11.8 kcps for 10.4 μW of pump power (1.1 million pairs / mW), in a 2.9-nm bandwidth, while maintaining a very high two-photon entanglement quality, with a Bell-state fidelity of 99.3 ± 0.3%.
CitationSteinlechner, F. [et al.]. Phase-stable source of polarization-entangled photons in a linear double-pass configuration. "Optics express", Maig 2013, vol. 21, núm. 10, p. 11943-11951. 
URIhttp://hdl.handle.net/2117/20230
DOI10.1364/OE.21.011943
ISSN1094-4087
Publisher versionhttp://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-10-11943
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  • Departament de Teoria del Senyal i Comunicacions - Articles de revista [2.351]
  • FOTONICA - Grup de Recerca de Fotònica - Articles de revista [427]
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