Dynamical Backaction Cooling with Free Electrons

Abstract

The ability to cool single ions, atomic ensembles, and more recently macroscopic degrees of freedom down to the quantum groundstate has generated considerable progress and perspectives in Basic 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. In this work, we experimentally demonstrate the first self-induced coherent cooling mechanism that is not mediated by the electromagnetic field. 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-nanometer confinement of the electron beam and generalizes to any delayed and topologically confined interaction, with important consequences for near-field microscopy and fundamental nanoscale dissipation mechanisms.

8 pages, 4 figures

References in corpus (13)

• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
• Quantum Theory of Cavity-Assisted Sideband Cooling of Mechanical Motion
• Theory of ground state cooling of a mechanical oscillator using dynamical back-action
• Radiation-pressure cooling and optomechanical instability of a micro-mirror
• Self-cooling of a micro-mirror by radiation pressure
• Resolved Sideband Cooling of a Micromechanical Oscillator
• Cooling a nanomechanical resonator with quantum back-action
• Nanotube mechanical resonators with quality factors of up to 5 million
• Minimization of phonon-tunneling dissipation in mechanical resonators
• Bidimensional nano-optomechanics and topological backaction in a non-conservative radiation force field
• Improving the optomechanical entanglement and cooling by photothermal force
• X-ray pushing of a mechanical microswing

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• Ultrasensitive nano-optomechanical force sensor at dilution temperatures
• Optomechanical measurement of thermal transport in two-dimensional MoSe2 lattices
• Mass sensing for the advanced fabrication of nanomechanical resonators
• Real-time measurement of nanotube resonator fluctuations in an electron microscope
• Spin-Orbit Coupling Induced Back-action Cooling in Cavity-Optomechanics with a Bose-Einstein Condensate
• MicroMegascope
• Shot noise limited nanomechanical detection and radiation pressure backaction from an electron beam
• Temperature mediated back-action in micro- and nanomechanical resonators
• Atomic Force Nanoscope