A folded-sandwich polarization-entangled two-color photon pair source with large tuning capability for applications in hybrid quantum architectures
Journal article
Publication Details
Author list: Dietz O, Müller C, Kreißl T, Herzog U, Kroh T, Ahlrichs A, Benson O
Journal: Applied Physics B
Publication year: 2016
Volume number: 122
Issue number: 33
URL: http://link.springer.com/article/10.1007/s00340-015-6275-x
Abstract
We demonstrate a two-color entangled photon pair source which can be adapted easily to a wide range of wavelengths 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$\pm$0.021 is demonstrated and improvements of the setup are discussed.
