Coherent frequency up-conversion of microwaves to the optical telecommunications band in an Er:YSO crystal

摘要

The ability to convert quantum states from microwave photons to opticalphotons is important for hybrid system approaches to quantum informationprocessing. In this paper we report the up-conversion of a microwave signalinto the optical telecommunications wavelength band using erbium dopants in ayttrium orthosilicate crystal via stimulated Raman scattering. The microwaveswere applied to the sample using a 3D copper loop-gap resonator and thecoupling and signal optical fields were single passed. The conversionefficiency was low, in agreement with a theoretical analysis, but can besignificantly enhanced with an optical resonator.