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arXiv · 1504.02471

Modification of phonon processes in nanostructured rare-earth-ion-doped crystals

Thomas Lutz·Lucile Veissier·Charles W. Thiel·Rufus L. Cone·Paul E. Barclay·Wolfgang Tittel
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Abstract

Nano-structuring impurity-doped crystals affects the phonon density of states and thereby modifies the atomic dynamics induced by interaction with phonons. We propose the use of nano-structured materials in the form of powders or phononic bandgap crystals to enable or improve persistent spectral hole-burning and coherence for inhomogeneously broadened absorption lines in rare-earth-ion-doped crystals. This is crucial for applications such as ultra-precise radio-frequency spectrum analyzers and optical quantum memories. As an example, we discuss how phonon engineering can enable spectral hole burning in erbium-doped materials operating in the convenient telecommunication band, and present simulations for density of states of nano-sized powders and phononic crystals for the case of Y2SiO5, a widely-used material in current quantum memory research.

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Thomas Lutz, Lucile Veissier, Charles W. Thiel, Rufus L. Cone, Paul E. Barclay, Wolfgang Tittel. 2015-04-09. Modification of phonon processes in nanostructured rare-earth-ion-doped crystals. https://doi.org/10.1103/physreva.94.013801

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