Atomic quantum memory: cavity vs single pass schemes

Details Atomic quantum memory: cavity vs single pass schemes Atomic quantum memory: cavity vs single pass schemes

2004-10-15

arxiv.org/abs/quant-ph/0410125v1

Physical Review A 71 (2005) 043801

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.71.043801

This paper presents a quantum mechanical treatment for both atomic and field fluctuations of an atomic ensemble interacting with propagating fields, either in Electromagnetically Induced Transparency or in a Raman situation. The atomic spin noise spectra and the outgoing field spectra are calculated in both situations. For suitable parameters both EIT and Raman schemes efficiently preserve the quantum state of the incident probe field in the transfer process with the atoms, although a single pass scheme is shown to be intrinsically less efficient than a cavity scheme.

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