Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session X17: Non-Linear Dynamics and Pattern Formation
8:00 AM–10:36 AM,
Friday, March 19, 2021
Sponsoring
Unit:
GSNP
Chair: Thomas Witten, University of Chicago
Abstract: X17.00007 : Levitated nanoparticles as non-equilibrium memories: experimental verification of the generalised Landauer’s principle*
9:12 AM–9:24 AM
Live
Presenter:
Mario Arnolfo Ciampini
(Faculty of Physics, University of Vienna)
Authors:
Mario Arnolfo Ciampini
(Faculty of Physics, University of Vienna)
Tobias Wenzl
(Faculty of Physics, University of Vienna)
Michael Konopik
(Department of Physics, Friedrich-Alexander-Universität)
Eric Lutz
(Department of Physics, Friedrich-Alexander-Universität)
Gregor Thalhammer
(Department of Physiology and Medical Physics, Medical University of Innsbruck)
Monika Ritsch-Marte
(Department of Physiology and Medical Physics, Medical University of Innsbruck)
Markus Aspelmeyer
(Faculty of Physics, University of Vienna)
Nikolai Kiesel
(Faculty of Physics, University of Vienna)
We show the versatility of our platform by verifying a generalised version of Landauer’s principle, where a logical memory is encoded in the position of the particle in the double-well, and the initial state is prepared in an out-of-equilibrium classically-squeezed condition. We infer produced work and heat over many repetitions of the protocols, and we observe that such state preparation greatly reduces the energy cost to erase the memory, allowing it in principle to be made negative [1].
Our results pave the way to fully customizable vacuum optical trapping in arbitrary potentials and opens up to the study of non-linearities in ground-state cooled particles.
[1] M. Konopik et al, EPL, 131, 6 (2020)
*We acknowledge support from Austrian Science Fund (FWF): Y 952-N36, START
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