Rotational levitodynamics – Joanna Zielinska (ETH)

Data / Hora
Date(s) - 14/03/2024
17:00 - 18:00

Categorias

• Coloquios

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COLÓQUIO DO DEPARTAMENTO DE FÍSICA

Rotational levitodynamics

Joanna Zielinska (ETH)

14/03/2024 – 5a. feira – 17h – sala – sala L776

Abstract:

Levitodynamics focuses on manipulation of nano-scale objects levitated using optical tweezers. Recent advances are motivated by its promise to generate macroscopic quantum states and to sense extremely small forces. The degrees of freedom of a nanoparticle are not limited to the centre-of-mass translational motion. The study of the nanoparticle’s orientation represents a particularly interesting research direction. Rotational degrees of freedom are controlled using the polarisation of the optical tweezer light, and we are acquiring remarkable level of control over them – torsional oscillations can be cooled down to the quantum ground state and nanoparticles can be made to spin to the point where they are among the fastest rotating objects on Earth. I will discuss new avenues in the rotational levitodynamics both in the context of sensing and of generation of quantum states of massive objects in the future.