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 Tools annual

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 Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Typical of modern quantum technologies employing nanomechanical oscillatorsis to demand few mechanical quantum excitations, for instance, to prolongcoherence times of a particular task or, to engineer a specific non-classicalstate. For this reason, we devoted the present work to exhibit how to bring aninitial thermalized nanomechanical oscillator near to its ground state.Particularly, we focus on extending the novel results of D. D. B. Rao\textit{et al.}, Phys. Rev. Lett. \textbf{117}, 077203 (2016), where amechanical object can be heated up, squeezed, or cooled down near to its groundstate through conditioned single-spin measurements. In our work, we study asimilar iterative spin-mechanical system when $N$ spins interact with themechanical oscillator. Here, we have also found that the postselectionprocedure acts as a discarding process, i.e., we steer the mechanics to theground state by dynamically filtering its vibrational modes. We show that whenconsidering symmetric collective spin postselection, the inclusion of $N$ spinsinto the quantum dynamics results highly beneficial. In particular, decreasingthe total number of iterations to achieve the ground-state, with a success rateof probability comparable with the one obtained from the single-spin case.

Ground-state cooling of a nanomechanical oscillator with N spins