Quantum information with cold atoms

Anders Kastberg

Xiao-Fei Zhang, Yao-hua Chen, GuoCai Liu +3 more

R. Folman, P. Krüger, Donatella Cassettari +3 more

Atoms can be trapped and guided using nanofabricated wires on surfaces, achieving the scales required by quantum information proposals. These atom chips form the basis for robust and widespread applications of cold atoms ranging from atom optics to fundamental questions in mesoscopic physics, and possibly quantum information systems.

Sam Jarman

Quantum information has been transferred between a cold atomic gas and a solid crystal using photons.

Erika Andersson

Wojciech Gawlik, Adam M. Wojciechowski

Coherence, or superposition of atomic states drastically modifies optical properties of atomic media, gives rise to a plethora of interference effects in the interaction of light and atoms and finds applications in quantum information and metrology. This paper presents some experiments on quantum coherences with cold atoms and discusses their possible applications.