The coupling between optical and mechanical degrees of freedom at the quantum level leads to novel phenomena such as radiation pressure cooling/amplification and optical spring effect. The back action of photons can also affect the dynamics of the mechanical oscillator dramatically in a regime where the mechanical motion of is comparable to the quantum noise. The understanding and the control of quantum noise in this system is crucial to fundamental study such as the coherence and dynamics of mechanical oscillators and to application such as high precision measurement and quantum information processing.

Share this post