Single-cell atomic quantum memory for light

Details Single-cell atomic quantum memory for light Single-cell atomic quantum memory for light

2005-09-14

arxiv.org/abs/quant-ph/0509094v2

Physics

Quantum Physics

6 pages, 2 figures, to be published in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.74.043809

Recent experiments demonstrating atomic quantum memory for light [B. Julsgaard et al., Nature 432, 482 (2004)] involve two macroscopic samples of atoms, each with opposite spin polarization. It is shown here that a single atomic cell is enough for the memory function if the atoms are optically pumped with suitable linearly polarized light, and quadratic Zeeman shift and/or ac Stark shift are used to manipulate rotations of the quadratures. This should enhance the performance of our quantum memory devices since less resources are needed and losses of light in crossing different media boundaries are avoided.

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