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This paper is quantum physics research on optically levitated nanoparticles, aimed at creating non-classical motional states and quantum-limited sensing. It proposes cylindrically polarized vortex beams as a way to cut recoil heating, reportedly by up to an order of magnitude versus standard Gaussian tweezers, and to trap larger particles. The results are theoretical or simulation-stage claims from an arXiv preprint, so the practical gains still need experimental confirmation.
Levitated optomechanics with cylindrically polarized vortex beams
arXiv:2510.05384v2 Announce Type: replace Abstract: Optically levitated and cooled nanoparticles are a new quantum system whose application to the creation of non-classical states of motion and quantum limited sensing is fundamentally limited by recoil and bulk heating. We study the creation of stable 3D optical traps using optical cylindrically polarized vortex beams with radial and azimuthal polarization and show that a significant reduction in recoil heating by up to an order of magnitude can be achieved when compared with conventional single Gaussian beam tweezers. Additionally these beams allow trapping of larger particles outside the Rayleigh regime using both bright and dark tweezer trapping with reduced recoil heating. By changing the wavelength of the trapping laser, or the size of the particles, non-linear and repulsive potentials of interest for the creation of non-classical states of motion can also be created.
Abstract:Optically levitated and cooled nanoparticles are a new quantum system whose application to the creation of non-classical states of motion and quantum limited sensing is fundamentally limited by recoil and bulk heating. We study the creation of stable 3D optical traps using optical cylindrically polarized vortex beams with radial and azimuthal polarization and show that a significant reduction in recoil heating by up to an order of magnitude can be achieved when compared with conventional single Gaussian beam tweezers. Additionally these beams allow trapping of larger particles outside the Rayleigh regime using both bright and dark tweezer trapping with reduced recoil heating. By changing the wavelength of the trapping laser, or the size of the particles, non-linear and repulsive potentials of interest for the creation of non-classical states of motion can also be created.
Quantum Physics (quant-ph); Optics (physics.optics)
arXiv:2510.05384 [quant-ph]
(or arXiv:2510.05384v2 [quant-ph] for this version)
https://doi.org/10.48550/arXiv.2510.05384 Focus to learn more arXiv-issued DOI via DataCite
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