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Coherent frequency up-conversion of microwaves to the optical telecommunications band in an Er:YSO crystal
The ability to convert quantum states from microwave photons to optical photons is important for hybrid system approaches to quantum information processing. We report the up-conversion of a microwave signal into the optical telecommunications wavelength band using erbium dopants in a yttrium orthosilicate crystal via stimulated Raman scattering. The microwaves …