English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We theoretically analyse an autonomous clock comprising ananoelectromechanical system, which undergoes self-oscillations driven byelectron tunnelling. The periodic mechanical motion behaves as the clockwork,similar to the swinging of a pendulum, while induced oscillations in theelectrical current can be used to read out the ticks. We simulate the dynamicsof the system in the quasi-adiabatic limit of slow mechanical motion, allowingus to infer statistical properties of the clock's ticks from the currentauto-correlation function. The distribution of individual ticks exhibits atradeoff between accuracy, resolution, and dissipation, as expected fromprevious literature. Going beyond the distribution of individual ticks, weinvestigate how clock accuracy varies over different integration times bycomputing the Allan variance. We observe non-monotonic features in the Allanvariance as a function of time and applied voltage, which can be explained bythe presence of temporal correlations between ticks. These correlations areshown to yield a precision advantage for timekeeping over the timescales thatthe correlations persist. Our results illustrate the non-trivial features ofthe tick series produced by nanoscale clocks, and pave the way for experimentalinvestigation of clock thermodynamics using nanoelectromechanical systems.

Powering an autonomous clock with quantum electromechanics