Quantum theory of feedback cooling of an anelastic macro-mechanical oscillator
arXiv:2111.02412 · doi:10.1103/PhysRevA.105.043520
Abstract
Conventional techniques for laser cooling, by coherent scattering off of internal states or through an optical cavity mode, have so far proved inefficient on mechanical oscillators heavier than a few nanograms. That is because larger oscillators vibrate at frequencies much too small compared to the scattering rates achievable by their coupling to auxiliary modes. Decoherence mechanisms typically observed in heavy low frequency elastically suspended oscillators also differ markedly from what is assumed in conventional treatments of laser cooling. We show that for a low-frequency anelastic oscillator forming the mechanically compliant end-mirror of a cavity, detuned optical readout, together with measurement-based feedback to stiffen and dampen it, can harness ponderomotively generated quantum correlations, to realize efficient cooling to the motional ground state. This will pave the way for experiments that call for milligram-scale mechanical oscillators prepared in pure motional states, for example, for tests of gravity's effect on massive quantum systems.
arXiv comment12 pages, 2 figures
References in corpus (40)
- Cavity Optomechanics
- Laser cooling of a nanomechanical oscillator into its quantum ground state
- Sideband Cooling Micromechanical Motion to the Quantum Ground State
- Introduction to Quantum Noise, Measurement and Amplification
- Quantum Theory of Cavity-Assisted Sideband Cooling of Mechanical Motion
- Theory of ground state cooling of a mechanical oscillator using dynamical back-action
- Motional Quantum Ground State of a Levitated Nanoparticle from Room Temperature
- Conversion of conventional gravitational-wave interferometers into QND interferometers by modifying their input and/or output optics
- Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes
- Measurement-based quantum control of mechanical motion
- Real-time optimal quantum control of mechanical motion at room temperature
- Cavity cooling of a single atom
- Quantum control of a nanoparticle optically levitated in cryogenic free space
- Optomechanical Cooling of a Macroscopic Oscillator by Homodyne Feedback
- Measurement and control of a mechanical oscillator at its thermal decoherence rate
- Nanoscale temperature measurements using non-equilibrium Brownian dynamics of a levitated nanosphere
- Cooling a single atom in an optical tweezer to its quantum ground state
- Laser cooling of a micromechanical membrane to the quantum backaction limit
- Quantum Noise Interference and Back-action Cooling in Cavity Nanomechanics
- Optical dilution and feedback cooling of a gram-scale oscillator to 6.9 mK
- Continuous Force and Displacement Measurement Below the Standard Quantum Limit
- Cooling to the Ground State of Axial Motion for One Atom Strongly Coupled to an Optical Cavity
- Dissipative Optomechanics in a Michelson--Sagnac Interferometer
- Motional Sideband Asymmetry of a Nanoparticle Optically Levitated in Free Space
- Ultra-Efficient Cooling of Resonators: Beating Sideband Cooling with Quantum Control
- Observation of generalized optomechanical coupling and cooling on cavity resonance
- Approaching the motional ground state of a 10 kg object
- Passive Cooling of a Micromechanical Oscillator with a Resonant Electric Circuit
- Feedback cooling of the normal modes of a massive electromechanical system to submillikelvin temperature
- Ground state cooling and high-fidelity quantum transduction via parametrically-driven bad-cavity optomechanics
- Partial Optomechanical Refrigeration via Multimode Cold-Damping Feedback
- Improving broadband displacement detection with quantum correlations
- Gas damping force noise on a macroscopic test body in an infinite gas reservoir
- Enhancement of mechanical Q-factors by optical trapping
- Quantum correlations of light due to a room temperature mechanical oscillator for force metrology
- Macroscopic mechanical oscillators at the quantum limit using optomechanical cooling
- Linear Amplifier Model for Optomechanical Systems
- Cooling a harmonic oscillator by optomechanical modification of its bath
- Evidence for structural damping in a high-stress silicon nitride nanobeam and its implications for quantum optomechanics
- Quantum Feedback Cooling of a Mechanical Oscillator Using Variational Measurements:Tweaking Heisenberg's Microscope