Doubly heralded single-photon absorption by a single atom

被引：0
作者：
J. Brito
S. Kucera
P. Eich
P. Müller
J. Eschner
机构：
[1] Universität des Saarlandes,Experimentalphysik
来源：
Applied Physics B | 2016年 / 122卷
关键词：
Single Atom; Photon Pair; Quantum Network; Dark Count; Quantum State Transfer;
D O I：
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学科分类号：
摘要：
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 (Kurz et al. in Nat Commun 5:5527, 2014; Müller and Eschner in Appl Phys B 114:303, 2013). 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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