PMID: 11909400Mar 23, 2002Paper

Quantum state preparation and conditional coherence

Physical Review Letters
Kevin J ReschA M Steinberg

Abstract

It is well known that spontaneous parametric down-conversion can be used to probabilistically prepare single-photon states. We have performed an experiment in which arbitrary superpositions of zero- and one-photon states can be prepared by appropriate postselection. The optical phase, which is meaningful only for superpositions of photon number, is related to the relative phase between the zero- and one-photon states. Whereas the light from spontaneous parametric down-conversion has an undefined phase, we show that this technique collapses one beam to a state of well-defined optical phase when a measurement succeeds on the other beam.

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Citations

Mar 7, 2013·Scientific Reports·Lian-Ao WuDaniel A Lidar
Jan 22, 2015·Optics Express·Jean EtesseRosa Tualle-Brouri
Nov 28, 2014·Nature Communications·Gaia DonatiIan A Walmsley
Mar 14, 2013·Optics Express·Merlin CooperBrian J Smith
Mar 26, 2016·Physical Review Letters·Matteo AltorioMarco Barbieri
Aug 7, 2007·Physical Review Letters·K J ReschA G White
Jul 30, 2002·Physical Review Letters·Kevin J ReschAephraim M Steinberg
Jul 15, 2003·Physical Review Letters·T B Pittman, J D Franson
Apr 12, 2006·Physical Review Letters·Kaoru SanakaAnton Zeilinger
Oct 23, 2004·Science·Alessandro ZavattaMarco Bellini

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