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arXiv · 0808.1988

A tunable narrowband entangled photon pair source for resonant single-photon single-atom interaction

Albrecht Haase·Nicolas Piro·Jürgen Eschner·Morgan W. Mitchell
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Abstract

We present a tunable, frequency-stabilized, narrow-bandwidth source of frequency-degenerate, entangled photon pairs. The source is based on spontaneous parametric downconversion (SPDC) in periodically-poled KTiOPO4 (PPKTP). Its wavelength can be stabilized to 850 or 854 nm, thus allowing to address two D-P transitions in 40Ca+ ions. Its output bandwidth of 22 MHz coincides with the absorption bandwidth of the calcium ions. Its spectral power density is 1.0 generated pairs/(s MHz mW).

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Albrecht Haase, Nicolas Piro, Jürgen Eschner, Morgan W. Mitchell. 2008-08-28. A tunable narrowband entangled photon pair source for resonant single-photon single-atom interaction. https://doi.org/10.1364/ol.34.000055

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