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  Accessing the purity of a single photon by the width of the Hong-Ou-Mandel interference

Cassemiro, K. N., Laiho, K., & Silberhorn, C. (2010). Accessing the purity of a single photon by the width of the Hong-Ou-Mandel interference. NEW JOURNAL OF PHYSICS, 12: 113502. doi:10.1088/1367-2630/12/11/113052.

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Cassemiro, Katiuscia N.1, Autor           
Laiho, Kaisa1, Autor           
Silberhorn, Christine1, Autor           
Affiliations:
1Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364718              

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Schlagwörter: 2-PHOTON INTERFERENCE; DOWN-CONVERSION; QUANTUM; COHERENCE; INFORMATION; STATEPhysics;
 Zusammenfassung: We demonstrate a method for determining the spectral purity of single photons. The technique is based on the Hong-Ou-Mandel ( HOM) interference between a single-photon state and a suitably prepared coherent field. We show that the temporal width of the HOM dip is related not only to the reciprocal of the spectral width but also to the underlying quantum coherence. Therefore, by measuring the width of both the HOM dip and the spectrum, one can directly quantify the degree of spectral purity. The distinct advantage of our proposal is that it obviates the need for perfect mode matching, since it does not rely on the visibility of the interference. Our method is particularly useful for characterizing the purity of heralded single-photon states.

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Sprache(n): eng - English
 Datum: 2010
 Publikationsstatus: Online veröffentlicht
 Seiten: 15
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000284776400002
DOI: 10.1088/1367-2630/12/11/113052
 Art des Abschluß: -

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Titel: NEW JOURNAL OF PHYSICS
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND : IOP PUBLISHING LTD
Seiten: - Band / Heft: 12 Artikelnummer: 113502 Start- / Endseite: - Identifikator: ISSN: 1367-2630