Dynamical Control in Cavity Electro-Optics

The development of quantum transducers for efficient, low-noise, and bidirectional microwave-optical frequency conversion has received wide interest over the last years, due to the emerging demands for long distance quantum links between localized quantum information in superconducting circuits. In this work, we show our recent results on the dynamical control of optical and microwave fields in the pulsed regime. The electro-optic (EO) device consists of a lithium niobate optical resonator coupled to a microwave cavity in the quantum regime. More specifically, we show the multimode electro-optic dynamics in the time domain, including electro-optically induced transparency/absorption of the optical field and dynamical backaction of the microwave field. Our system enables optical measurement and control of the microwave field, including laser cooling and microwave-optical entanglement generation.