Phase-stable source of polarization-entangled photons in a linear double-pass configuration.
Opt Express
; 21(10): 11943-51, 2013 May 20.
Article
em En
| MEDLINE
| ID: mdl-23736416
ABSTRACT
We demonstrate a compact, robust, and highly efficient source of polarization-entangled photons, based on linear bi-directional down-conversion in a novel 'folded sandwich' configuration. Bi-directionally pumping a single periodically poled KTiOPO(4) (ppKTP) crystal with a 405-nm laser diode, we generate entangled photon pairs at the non-degenerate wavelengths 784 nm (signal) and 839 nm (idler), and achieve an unprecedented detection rate of 11.8 kcps for 10.4 µW of pump power (1.1 million pairs / mW), in a 2.9-nm bandwidth, while maintaining a very high two-photon entanglement quality, with a Bell-state fidelity of 99.3 ± 0.3%.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Refratometria
/
Ressonância de Plasmônio de Superfície
/
Lasers de Estado Sólido
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article