Sympathetic cooling and squeezing of two co-levitated nanoparticles
arXiv:2111.03123 · doi:10.1103/PhysRevResearch.5.013070
Abstract
Levitated particles are an ideal tool for measuring weak forces and investigating quantum mechanics in macroscopic objects. Arrays of two or more of these particles have been suggested for improving force sensitivity and entangling macropscopic objects. In this article, two charged, silica nanoparticles, that are coupled through their mutual Coulomb repulsion, are trapped in a Paul trap, and the individual masses and charges of both particles are characterised. We demonstrate sympathetic cooling of one nanoparticle coupled via the Coulomb interaction to the second nanoparticle to which feedback cooling is directly applied. We also implement sympathetic squeezing through a similar process showing non-thermal motional states can be transferred by the Coulomb interaction. This work establishes protocols to cool and manipulate arrays of nanoparticles for sensing and minimising the effect of optical heating in future experiments.
8 pages, 4 figures
References in corpus (15)
- A Spin Entanglement Witness for Quantum Gravity
- Millikelvin cooling of an optically trapped microsphere in vacuum
- Quantum control of a nanoparticle optically levitated in cryogenic free space
- Back-action evasion and squeezing of a mechanical resonator using a cavity detector
- Cold Damping of an Optically Levitated Nanoparticle to micro-Kelvin Temperatures
- Rotational Quantum Friction
- Experimental Realisation of a Thermal Squeezed State of Levitated Optomechanics
- Hybrid opto-mechanical systems with nitrogen-vacancy centers
- Signatures of the quantum nature of gravity in the differential motion of two masses
- Cooling of Levitated Graphene Nanoplatelets in High Vacuum
- Classical non-Gaussian state preparation through squeezing in an opto-electromechanical resonator
- Two mode coupling in a single ion oscillator via parametric resonance
- Position measurement of a levitated nanoparticle via interference with its mirror image
- Performance and limits of feedback cooling methods for levitated oscillators: a direct comparison
- Position Estimation of a Parametrically Driven Optomechanical System