Active-feedback quantum control of an integrated low-frequency | ResearchBunny

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Abstract

This paper demonstrates measurement-based feedback cooling on a fully integrated optomechanical device operating in the deep sideband-unresolved limit. Achieving a minimal average phonon occupation of 0.76 (pre-cooled with liquid helium) and 3.5 (liquid nitrogen), significant sideband asymmetry verifies the quantum character of the mechanical motion. The method and device are suitable for quantum-limited sensing applications.

Publisher

Nature Communications

Published On

Aug 05, 2023

Authors

Jingkun Guo, Jin Chang, Xiong Yao, Simon Gröblacher

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