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Cooling and Self-Oscillation in a Nanotube Electro-Mechanical Resonator
Mesoscale and Nanoscale Physics · Submitted 12 Mar 2019
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim This work shows that electrons may become a useful resource for quantum manipulation of mechanical resonators.
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The abstract, sentence by sentence
Nanomechanical resonators are used with great success to couple mechanical motion to other degrees of freedom, such as photons, spins, and electrons. Mechanical vibrations can be efficiently cooled and amplified using photons, but not with other degrees of freedom. Here, we demonstrate a simple yet powerful method for cooling, amplification, and self-oscillation using electrons. This is achieved by applying a constant (DC) current of electrons through a suspended nanotube in a dilution fridge. We demonstrate cooling down to $4.6\pm 2.0$ quanta of vibrations. We also observe self-oscillation, which can lead to prominent instabilities in the electron transport through the nanotube. We attribute the origin of the observed cooling and self-oscillation to an electrothermal effect. This work shows that electrons may become a useful resource for quantum manipulation of mechanical resonators.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Nanomechanical resonators are used with great success to couple mechanical motion to other degrees of freedom, such as photons, spins, and electrons. | background 1.00 | 0.06 | 0.03 | asserted 1.00 |
| s1 | Mechanical vibrations can be efficiently cooled and amplified using photons, but not with other degrees of freedom. | gap 0.88 | 0.08 | 0.05 | asserted 1.00 |
| s2 | Here, we demonstrate a simple yet powerful method for cooling, amplification, and self-oscillation using electrons. | contribution 1.00 | 0.96 | 0.57 | asserted 1.00 |
| s3 | This is achieved by applying a constant (DC) current of electrons through a suspended nanotube in a dilution fridge. | method 1.00 | 0.84 | 0.04 | asserted 0.98 |
| s4 | We demonstrate cooling down to $4.6\pm 2.0$ quanta of vibrations. | result 1.00 | 0.97 | 0.11 | asserted 1.00 |
| s5 | We also observe self-oscillation, which can lead to prominent instabilities in the electron transport through the nanotube. | result 1.00 | 0.95 | 0.07 | asserted 0.69 |
| s6 | We attribute the origin of the observed cooling and self-oscillation to an electrothermal effect. | interpretation 1.00 | 0.82 | 0.17 | asserted 0.74 |
| s7 | This work shows that electrons may become a useful resource for quantum manipulation of mechanical resonators. | interpretation 0.96 | 0.44 | 0.82 | hedged possibility 0.96 |
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The paper
Original abstract
Nanomechanical resonators are used with great success to couple mechanical motion to other degrees of freedom, such as photons, spins, and electrons. Mechanical vibrations can be efficiently cooled and amplified using photons, but not with other degrees of freedom. Here, we demonstrate a simple yet powerful method for cooling, amplification, and self-oscillation using electrons. This is achieved by applying a constant (DC) current of electrons through a suspended nanotube in a dilution fridge. We demonstrate cooling down to $4.6\pm 2.0$ quanta of vibrations. We also observe self-oscillation, which can lead to prominent instabilities in the electron transport through the nanotube. We attribute the origin of the observed cooling and self-oscillation to an electrothermal effect. This work shows that electrons may become a useful resource for quantum manipulation of mechanical resonators.
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How the literature uses it
2 arXiv papers cite this in 6 sentences
Papers citing it · 3 sentences without a confident label
Cites it as support 1 paper
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In this work, we consider an autonomous clock powered by electromechanical self-oscillations of the latter kind, motivated by the experiments reported in Refs. [ref] .
Powering an autonomous clock with quantum electromechanics · Introduction · 0.99
Cites it as background 2 papers
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This can occur either by electron shuttling [ref] , where single-electron tunnelling resonantly drives the oscillator, or via a subtler electromechanical instability that emerges from the time-delayed effect of many non-resonant tunnelling events [ref] .
Powering an autonomous clock with quantum electromechanics · Introduction · 0.84
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Experimental systems that are commonly studied comprise quantum dots coupled to localized harmonic oscillators such as microwave photon cavities [ref] or mechanical resonators [ref] .
Single atom laser in normal-superconductor quantum dots · Introduction · 1.00
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