A folded-sandwich polarization-entangled two-color photon pair source with large tuning capability for applications in hybrid quantum systems

A folded-sandwich polarization-entangled two-color photon pair source with large tuning capability for applications in hybrid quantum systems

We demonstrate a two-color entangled photon pair source which can be adapted easily to a wide range of wavelength combinations. A Fresnel rhomb as a geometrical quarter-wave plate and a versatile combination of compensation crystals are key components of the source. Entanglement of two photons at th...

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Veröffentlicht in:Applied physics. B, Lasers and optics Lasers and optics, 2016-02, Vol.122 (2), p.1-7, Article 33
Hauptverfasser: Dietz, Otto, Müller, Chris, Kreißl, Thomas, Herzog, Ulrike, Kroh, Tim, Ahlrichs, Andreas, Benson, Oliver
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Color
Crystals
Engineering
Entanglement
Hybrid systems
Lasers
Optical Devices
Optics
Photonics
Photons
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Quantum Repeaters: From Components to Strategies
Quantum theory
Telecommunications
Tuning
Wavelengths
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Beschreibung
Zusammenfassung:We demonstrate a two-color entangled photon pair source which can be adapted easily to a wide range of wavelength combinations. A Fresnel rhomb as a geometrical quarter-wave plate and a versatile combination of compensation crystals are key components of the source. Entanglement of two photons at the Cs D1 line (894.3 nm) and at the telecom O-band (1313.1 nm) with a fidelity of F = 0.753 ± 0.021 is demonstrated, and improvements of the setup are discussed.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-015-6275-x