Theory of on-chip integrated microwave-to-optical quantum coherent converter
ORAL
Abstract
We present a proposal for implementing a direct quantum electrooptical converter based on a nonlinear optical microresonator. The hybrid system combines planar superconducting microwave circuits and integrated nonlinear ultrahigh-Q crystalline whispering gallery mode (WGM) optical microresonator. It features low footprint and scalability. The electrooptical dynamics of the device is similar to that of a cavity quantum optomechanical system and Pockels effect is used as the coupling interaction. We simulate the system and show that high-conversion performance can be achieved with current technology. On-chip, such integrated device holds promise for use in large-scale quantum applications as a first direct microwave-to-optical quantum repeater.
*The authors acknowledge support from an ERC Advanced grant (QREM), the Swiss National Science Foundation (NCCR Quantum Science and Technology) and and the European Union Seventh Framework Program through iQUOEMS
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