Collective atom phase controls in photon echoes for quantum memory applications I: Population inversion removal
arXiv:1612.00115
Abstract
Photon echo-based quantum memories demonstrated in rare-earth doped solids over the last decade have solved the major constraint of population inversion in conventional photon echoes by using collective atom phase controls. Both atomic frequency comb and gradient echoes have also made a breakthrough in higher echo efficiency, where conventional photon echo efficiency remains at a few per cent. Here we review, analyze, and discuss the collective atom phase control applied to conventional photon echoes for quantum memory applications to clarify fundamental physics of coherent transients in a three-level system specifically for optical-spin coherence conversion in a controlled double rephasing echoes. Some critical misunderstandings in various protocols are also analyzed, and corrected for near unity echo efficiency under no population inversion.
19 pages including 9 figures
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Cited by in corpus (4)
- Gaussian pulse-induced imperfect rephasing in coherent transients
- A controlled ac Stark echo for quantum memories
- Understanding of collective atom phase control in modified photon echoes for a near perfect, storage time extended quantum memory
- Analysis of controlled Rabi flopping in a double rephasing photon echo scheme for quantum memories