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High-precision multiparameter estimation of mechanical force by quantum optomechanics
László Ruppert1, Andrey Rakhubovsky2, Radim Filip2
1Department of Optics, Palacky University, 17. listopadu 12, 77 146, Olomouc, Czech Republic. ruppert@optics.upol.cz.
Scientific Reports
|September 27, 2022
Summary
We present a quantum optomechanical scheme for highly precise force sensing. Initializing mechanical displacement allows weak light-matter interactions for accurate multiparameter force estimation, enabling new nanomechanical sensors.
Area of Science:
- Quantum physics
- Nanotechnology
- Optomechanics
Background:
- Nanomechanical oscillators are sensitive probes for linearized mechanical forces.
- Quantum optomechanics utilizes light-matter interactions within optical cavities.
Purpose of the Study:
- To propose a simple quantum optomechanical scheme for high-precision multiparameter force estimation.
- To demonstrate robustness against experimental imperfections and feasibility with weak interactions.
Main Methods:
- Employing a coherent light mode in a cavity with weak, short-pulsed light-matter interactions.
- Utilizing an initialization phase to transfer displacement to the mechanical mode.
Main Results:
- Achieving high-precision multiparameter estimation of unknown forces with significantly weaker optomechanical interactions.
- Simultaneously estimating force-induced displacement, phase shift, and squeezing of the mechanical mode.
- Demonstrating scheme robustness against experimental imperfections.
Conclusions:
- The proposed scheme offers a simple, robust method for nanomechanical sensing.
- Weak light-matter interactions are sufficient for advanced force estimation.
- This approach could pave the way for novel nanomechanical sensors.
