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arXiv · 1508.01029

Doubly-heralded single-photon absorption by a single atom

José Brito·Stephan Kucera·Pascal Eich·Philipp Müller·Jürgen Eschner
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Abstract

We report on a single-photon-to-single-atom interface, where a single photon generated by Spontaneous Parametric Down Conversion (SPDC) is absorbed by a single trapped ion. The photon is heralded by its time-correlated partner generated in the SPDC process, while the absorption event is heralded by a single photon emitted in its course. Coincidence detection marks doubly-heralded absorption, enabling photon-to-atom quantum state transfer [1, 2]. Background in the coincidence measurement is strongly suppressed by a new method that discriminates real absorption events from dark count-induced coincidences.

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José Brito, Stephan Kucera, Pascal Eich, Philipp Müller, Jürgen Eschner. 2015-08-05. Doubly-heralded single-photon absorption by a single atom. https://doi.org/10.1007/s00340-015-6276-9

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