Dissipative-coupling-assisted laser cooling: limitations and perspectives
arXiv:2007.13650 · doi:10.1103/PhysRevA.102.043520
Abstract
The recently identified possibility of ground-state cooling of a mechanical oscillator in the unresolved sideband regime by combination of the dissipative and dispersive optomechanical coupling under the red sideband excitation [Phys. Rev. A 88, 023850 (2013)], is currently viewed as a remarkable finding. We present a comprehensive analysis of this protocol, which reveals its very high sensitivity to small imperfections such as an additional dissipation, the inaccuracy of the optimized experimental settings, and the inaccuracy of the theoretical framework adopted. The impact of these imperfections on the cooling limit is quantitatively assessed. A very strong effect on the cooling limit is found from the internal cavity decay rate which even being small compared with the detection rate may drastically push that limit up, questioning the possibility of the ground state cooling. Specifically, the internal loss can only be neglected if the ratio of the internal decay rate to the detection rate is much smaller than the ratio of the cooling limit predicted by the protocol to the common dispersive-coupling assisted sideband cooling limit. More over, we establish that the condition of applicability of theory of that protocol is the requirement that the latter ratio is much smaller than one. A detailed comparison of the cooling protocol in question with the dispersive-coupling-assisted protocols which use the red sideband excitation or feedback is presented.
References in corpus (21)
- Cavity Optomechanics
- Quantum Theory of Cavity-Assisted Sideband Cooling of Mechanical Motion
- Theory of ground state cooling of a mechanical oscillator using dynamical back-action
- Measurement-based quantum control of mechanical motion
- Quantum Noise Interference and Back-action Cooling in Cavity Nanomechanics
- Quantum Measurement Theory in Gravitational-Wave Detectors
- Dissipative Optomechanics in a Michelson--Sagnac Interferometer
- Dissipative and Dispersive Optomechanics in a Nanocavity Torque Sensor
- Scaling law in signal recycled laser-interferometer gravitational-wave detectors
- Observation of generalized optomechanical coupling and cooling on cavity resonance
- Quantum limit of laser cooling in dispersively- and dissipatively-coupled optomechanical systems
- Robust force sensing for a free particle in a dissipative optomechanical system with a parametric amplifier
- Strong-coupling effects in dissipatively coupled optomechanical systems
- Anomalous dynamic back-action in interferometers
- Squeezed light and correlated photons from dissipatively coupled optomechanical systems
- Dissipative vs dispersive coupling in quantum opto-mechanics: squeezing ability and stability
- Quantum limited measurements with lossy optical cavity enabled by dissipative optomechanical coupling
- Monolayer graphene as dissipative membrane in an optical resonator
- Generalized analysis of quantum noise and dynamic back-action in signal-recycled Michelson-type laser interferometers
- Stable optical spring in aLIGO detector with unbalanced arms and in Michelson-Sagnac interferometer
- Stable Optical Rigidity Based on Dissipative Coupling