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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Spin cat states are promising candidates for quantum-enhanced measurement.Here, we analytically show that the ultimate measurement precision of spin catstates approaches the Heisenberg limit, where the uncertainty is inverselyproportional to the total particle number. In order to fully exploit theirmetrological ability, we propose to use the interaction-based readout forimplementing phase estimation. It is demonstrated that the interaction-basedreadout enables spin cat states to saturate their ultimate precision bounds.The interaction-based readout comprises a one-axis twisting, two$\frac{\pi}{2}$ pulses, and a population measurement, which can be realized viacurrent experimental techniques. Compared with the twisting echo scheme on spinsqueezed states, our scheme with spin cat states is more robust againstdetection noise. Our scheme may pave an experimentally feasible way to achieveHeisenberg-limited metrology with non-Gaussian entangled states.

Achieving Heisenberg-limited metrology with spin cat states via interaction-based readout