Cavity enhanced Raman heterodyne spectroscopy in Er:YSO for microwave to optical signal conversion
Xavier Fernandez-Gonzalvo, Sebastian P. Horvath, Yu-Hui Chen, Jevon J., Longdell
TL;DR
This paper demonstrates a significant enhancement in microwave to optical signal conversion efficiency using cavity-enhanced Raman heterodyne spectroscopy in Er:YSO, showing promise for quantum communication applications.
Contribution
The study introduces a resonant enhancement technique that boosts conversion efficiency by nearly four orders of magnitude in Er:YSO crystals at cryogenic temperatures.
Findings
Efficiency improved by nearly four orders of magnitude.
Resonant enhancement of pump and signal fields is effective.
Potential for quantum microwave-to-optical photon conversion.
Abstract
The efficiency of the frequency conversion process at the heart of Raman heterodyne spectroscopy was improved by nearly four orders of magnitude by resonant enhancement of both the pump and signal optical fields. Our results using an erbium doped YSiO crystal at temperatures near 4K suggest that such an approach is promising for the quantum conversion of microwave to optical photons.
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