Inversion-free, noiseless Raman echoes

Details Inversion-free, noiseless Raman echoes Inversion-free, noiseless Raman echoes

2011-11-20

arxiv.org/abs/1111.4607v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

Using double optical Raman rephasing, an inversion-free resonant Raman echo is studied in an inhomogeneously broadened spin ensemble of a solid medium, where the Raman optical field-excited spin coherence has a frozen propagation vector. Unlike photon echoes whose quantum memory application is strictly limited due to \pi rephasing pulse-induced population inversion causing quantum noises, the optical Raman field-excited spin echo is inherently silent owing to the frozen propagation vector. Thus, the doubly rephased Raman echo can be directly applied for quantum interface in a population inversion-free environment.

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