An elementary quantum network of single atoms in optical cavities

Stephan Ritter, Christian Nölleke, Carolin Hahn, Andreas Reiserer, Andreas Neuzner, Manuel Uphoff, Martin Mücke, Eden Figueroa, Joerg Bochmann, Gerhard Rempe

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

704 Zitate (Scopus)

Abstract

Quantum networks are distributed quantum many-body systems with tailored topology and controlled information exchange. They are the backbone of distributed quantum computing architectures and quantum communication. Here we present a prototype of such a quantum network based on single atoms embedded in optical cavities. We show that atom-cavity systems form universal nodes capable of sending, receiving, storing and releasing photonic quantum information. Quantum connectivity between nodes is achieved in the conceptually most fundamental way-by the coherent exchange of a single photon. We demonstrate the faithful transfer of an atomic quantum state and the creation of entanglement between two identical nodes in separate laboratories. The non-local state that is created is manipulated by local quantum bit (qubit) rotation. This efficient cavity-based approach to quantum networking is particularly promising because it offers a clear perspective for scalability, thus paving the way towards large-scale quantum networks and their applications.

OriginalspracheEnglisch
Seiten (von - bis)195-200
Seitenumfang6
FachzeitschriftNature
Jahrgang484
Ausgabenummer7393
DOIs
PublikationsstatusVeröffentlicht - 12 Apr. 2012
Extern publiziertJa

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