Probing the State of a Mechanical Oscillator with an Ultrastrongly Coupled Quantum Emitter

Cyril Elouard, Benjamin Besga, and Alexia Auffèves

Phys. Rev. Lett. 122, 013602 – Published 9 January 2019

In this work, the quantum noise associated with position measurement based on a quantum hybrid interaction is fully characterized in the ultrastrong coupling regime. More generally, this method can be used to describe the interaction of any quantum system strongly coupled to a finite size reservoir.