Quantum speed meter based on dissipative coupling

7th International Symposium and Young Scientists School "Modern Problems of Laser Physics"

Vyatchanin, Sergey P^1 ; Matsko, Andrey B^2

Faculty of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory, Moscow

119991, Russia^1

OEwaves Inc., 465 North Halstead Street, Pasadena

CA

91107, United States^2

关键词: Dissipative coupling;    Fabry-Perot cavity;    Quantum limit;    Quantum non demolition;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/793/1/012031/pdf
DOI  :  10.1088/1742-6596/793/1/012031

来源: IOP

【 摘 要 】

We consider dissipative coupling Fabry-Perot cavity, i.e. its input mirror transmittance depends on position of probe mass. We show that dissipative coupling provide possibility to realize quantum speed meter by natural way, without additional setup for subtraction of position x(t) and delayed position x(t-τ). Quantum speed meter is a quantum non demolition (QND) meter which allow to overcome Standatd Quantum Limit - we show it for speed meter based on dissipative coupling.