Efficient Conditional Preparation of High-Fidelity Single Photon States for Fiber-Optic Quantum Networks
- 25 August 2004
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 93 (9) , 093601
- https://doi.org/10.1103/physrevlett.93.093601
Abstract
Highly correlated photons or, accordingly, high-fidelity single-photon states are a prerequisite for closing detection loopholes in experimental tests of local realism and implementing scalable linear optical quantum computation. We demonstrate a parametric down-conversion source exhibiting a conditional detection efficiency of 51% (with corresponding preparation efficiency of 85%) and extraordinarily high detection rates of up to 8.5 x 10(5) coincidences/(s mW). We exploit a novel type-II phase matching configuration in a microstructured waveguide in conjunction with an ultrashort pump.Keywords
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