BELLANDO, Louis; KLEINE, Melissa; AMAROUCHENE, Yacine; PERRIN, Mathias; LOUYER, Yann

doi:10.1103/PhysRevLett.129.023602

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BELLANDO, Louis
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

KLEINE, Melissa
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

AMAROUCHENE, Yacine
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Physical Review Letters. 2022-07-06, vol. 129, n° 023602

American Physical Society

Resumen en inglés

We present an experimental realization of a biased optical periodic potential in the low friction limit. The noise-induced bistability between locked (torsional) and running (spinning) states in the rotational motion of a nanodumbbell is driven by an elliptically polarized light beam tilting the angular potential. By varying the gas pressure around the point of maximum intermittency, the rotational effective diffusion coefficient increases by more than 3 orders of magnitude over freespace diffusion. These experimental results are in agreement with a simple two-state model that is derived from the Langevin equation through using timescale separation. Our work provides a new experimental platform to study the weak thermal noise limit for diffusion in this system.< Leer menos

DOI

http://dx.doi.org/10.1103/PhysRevLett.129.023602

Proyecto ANR

Atteindre l'état fondamental quantique d'un oscillateur nanomécanique à lévitation optique - ANR-21-CE30-0006

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Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798