Interfering entangled photons of different colors
We have observed unusual second- and fourth-order interference patterns when entangled photons with center-wavelength differences about 40 nm are mixed together at single or dual Mach-Zehnder interferometers. The difference frequency of the photons appears directly in the spectrum of the coincidence...
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Veröffentlicht in: | Physical review letters 1993-03, Vol.70 (11), p.1603-1606 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We have observed unusual second- and fourth-order interference patterns when entangled photons with center-wavelength differences about 40 nm are mixed together at single or dual Mach-Zehnder interferometers. The difference frequency of the photons appears directly in the spectrum of the coincidence rate. This phase-sensitive behavior can reveal center-frequency differences from zero to hundreds of THz. (Author) |
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ISSN: | 0031-9007 1079-7114 |
DOI: | 10.1103/PhysRevLett.70.1603 |