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Quantum state transfer between field and atoms in Electromagnetically Induced Transparency

Aurelien Dantan·Michel Pinard
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Abstract

We show that a quasi-perfect quantum state transfer between an atomic ensemble and fields in an optical cavity can be achieved in Electromagnetically Induced Transparency (EIT). A squeezed vacuum field state can be mapped onto the long-lived atomic spin associated to the ground state sublevels of the Lambda-type atoms considered. The EIT on-resonance situation show interesting similarities with the Raman off-resonant configuration. We then show how to transfer the atomic squeezing back to the field exiting the cavity, thus realizing a quantum memory-type operation.

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Aurelien Dantan, Michel Pinard. 2003-12-23. Quantum state transfer between field and atoms in Electromagnetically Induced Transparency. https://doi.org/10.1103/physreva.69.043810

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