Quantum-Squeezing-Enhanced Optomechanical Measurement

Hybrid systems harbor surprises that will fuel quantum science for decades to come,which have been awarded for Nobel prize in physics for five times.Rapid advances of recent years have led to a wide range of practical applications in hybrid cavity optomechanical systems,including radiofrequency-to-optical conversion,quantum state preparation,and quantum sensing.Inspired by the recent experiments of quadratic coupling,which demonstrated displacement measurement and non-classical energy squeezing,we propose to achieve quantum-squeezing-enhanced force measurement with a millimetre-size dielectric membrane.Compared to linear coupling,we determined seven orders enhancement of precision,which can be further improved to three orders of magnitude with quantum squeezing.This work,as shown by our initial results,holds the promise to provide new methods for studies in medical diagnosis,inertial navigation,and high-energy physics.