Cooling of a levitated nanoparticle with digital parametric feedback

Abstract

The motion control of a levitated nanoparticle plays a central role in optical levitation for fundamental studies and practical applications. Here, we presented a digital parametric feedback cooling based on switching between two trapping laser intensity levels with square wave modulations. The effects of modulation depth and modulation signal phase on the cooling result were investigated in detail. With such a digital parametric feedback method, the centre-of-mass temperature of all three motional degrees of freedom can be cooled to dozens of milli-Kelvin, which paved the way to fully control the motion of the levitated nanoparticle with a programmable digital process for wild applications.

5 pages, 6 figures

References in corpus (12)

• Optically Levitated Nanodumbbell Torsion Balance and GHz Nanomechanical Rotor
• GHz Rotation of an Optically Trapped Nanoparticle in Vacuum
• Dynamic Relaxation of a Levitated Nanoparticle from a Non-Equilibrium Steady State
• Cold Damping of an Optically Levitated Nanoparticle to micro-Kelvin Temperatures
• Attonewton force detection using microspheres in a dual-beam optical trap in high vacuum
• Cavity cooling of a levitated nanosphere by coherent scattering
• Sensing of Static Forces with Free-Falling Nanoparticles
• Cavity-Based 3D Cooling of a Levitated Nanoparticle via Coherent Scattering
• Optimal Feedback Cooling of a Charged Levitated Nanoparticle with Adaptive Control
• Levitated Nanoparticles for Microscopic Thermodynamics - A Review
• Real-Time Kalman Filter: Cooling of an Optically Levitated Nanoparticle
• Electric feedback cooling of single charged nanoparticles in an optical trap

Cited by in corpus (6)

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• 6 GHz hyperfast rotation of an optically levitated nanoparticle in vacuum
• Arbitrary Non-equilibrium Steady State Construction with a Levitated Nanoparticle
• Imaging the dipole scattering of an optically levitated dielectric nanoparticle
• A nano vacuum gauge based on second-order coherence in optical levitation
• Scalable universal quantum gates between nitrogen-vacancy centers in levitated nanodiamonds arrays