Triply Resonant Microwave to Optical Conversion in Erbium-170 Doped Yttrium Orthosilicate

Gavin G. G. King, Luke S. Trainor, Jevon J. Longdell

We report microwave to optical upconversion in isotopically purified erbium-doped yttrium orthosilicate in a Fabry-Pérot resonator at millikelvin temperatures. This follows on from…