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Dynamical backaction cooling with free electrons

Nigu�s, A.; Siria, A.; Verlot, P.

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A. Nigu�s

A. Siria

P. Verlot


Pierre Verlot
Project Leader


The ability to cool single ions, atomic ensembles, and more recently macroscopic degrees of freedom down to the quantum ground state has generated considerable progress and perspectives in fundamental and technological science. These major advances have been essentially obtained by coupling mechanical motion to a resonant electromagnetic degree of freedom in what is generally known as laser cooling. Here, we experimentally demonstrate the first self-induced coherent cooling mechanism that is not mediated by an electromagnetic resonance. Using a focused electron beam, we report a 50-fold reduction of the motional temperature of a nanowire. Our result primarily relies on the sub-nanometre confinement of the electron beam and generalizes to any delayed and spatially confined interaction, with important consequences for near-field microscopy and fundamental nanoscale dissipation mechanisms.

Journal Article Type Article
Acceptance Date Aug 31, 2015
Online Publication Date Sep 18, 2015
Publication Date 2015-12
Deposit Date Dec 10, 2018
Publicly Available Date Feb 4, 2019
Journal Nature Communications
Electronic ISSN 2041-1723
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 6
Issue 1
Article Number 8104
Public URL
Publisher URL


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