Remote entanglement between a single atom and a Bose-Einstein condensate.
Phys Rev Lett
; 106(21): 210503, 2011 May 27.
Article
em En
| MEDLINE
| ID: mdl-21699281
ABSTRACT
Entanglement between stationary systems at remote locations is a key resource for quantum networks. We report on the experimental generation of remote entanglement between a single atom inside an optical cavity and a Bose-Einstein condensate (BEC). To produce this, a single photon is created in the atom-cavity system, thereby generating atom-photon entanglement. The photon is transported to the BEC and converted into a collective excitation in the BEC, thus establishing matter-matter entanglement. After a variable delay, this entanglement is converted into photon-photon entanglement. The matter-matter entanglement lifetime of 100 µs exceeds the photon duration by 2 orders of magnitude. The total fidelity of all concatenated operations is 95%. This hybrid system opens up promising perspectives in the field of quantum information.
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MEDLINE
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article