Bright, single-spatial-mode source of frequency non-degenerate, polarization-entangled photon pairs using periodically poled KTP

Bright, single-spatial-mode source of frequency non-degenerate, polarization-entangled photon pairs using periodically poled KTP

We use two perpendicular crystals of periodically-poled KTP to directly generate polarization-entangled photon pairs, the majority of which are emitted into a single Gaussian spatial mode. The signal and idler photons have wavelengths of 810 nm and 1550 nm, respectively, and the photon-pair generati...

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Veröffentlicht in:Optics express 2004, Vol.12 (15), p.3573-3580
Hauptverfasser: Pelton, Matthew, Marsden, Philip, Ljunggren, Daniel, Tengner, Maria, Karlsson, Anders, Fragemann, Anna, Canalias, Carlota, Laurell, Fredrik
Format: Artikel
Sprache:eng
Schlagworte:
Crystals
Light polarization
Multiphoton processes
Optical pumping
Probability
Quantum cryptography
Quantum theory
Single mode fibers
TECHNOLOGY
TEKNIKVETENSKAP
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Zusammenfassung:We use two perpendicular crystals of periodically-poled KTP to directly generate polarization-entangled photon pairs, the majority of which are emitted into a single Gaussian spatial mode. The signal and idler photons have wavelengths of 810 nm and 1550 nm, respectively, and the photon-pair generation rate is 1.2x107 sec-1 for a pump power of 62 mW. The apparatus is compact, flexible, and easily to use.
ISSN:1094-4087
1094-4087
DOI:10.1364/opex.12.003573