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

We present a ground-state cooling scheme for the mechanical degrees offreedom of mesoscopic magnetic particles levitated in low-frequency traps. Ourmethod makes use of a binary sensor and suitably shaped pulses to perform weak,adaptive measurements on the position of the magnet. This allows us toprecisely determine the position and momentum of the particle, transforming theinitial high-entropy thermal state into a pure coherent state. The energy isthen extracted by shifting the trap center. By delegating the task of energyextraction to a coherent displacement operation we overcome the limitationsassociated with cooling schemes that rely on the dissipation of a two-levelsystem coupled to the oscillator. We numerically benchmark our protocol inrealistic experimental conditions, including heating rates and imperfectreadout fidelities, showing that it is well suited for magnetogravitationaltraps operating at cryogenic temperatures. Our results pave the way forground-state cooling of micron-scale particles.

Ground-State Cooling of Levitated Magnets in Low-Frequency Traps