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

Fast discrimination between quantum states of superconducting artificialatoms is an important ingredient for quantum information processing. In circuitquantum electrodynamics, increasing the signal field amplitude in the readoutresonator, dispersively coupled to the artificial atom, improves thesignal-to-noise ratio and increases the measurement strength. Here we employthis effect over two orders of magnitude in readout power, made possible by theunique combination of a dimer Josephson junction array amplifier with a largedynamic range, and the fact that the readout of our granular aluminum fluxoniumartificial atom remained quantum-non-demolition (QND) at relatively largephoton numbers in the readout resonator, up to $\overline{n} = 110$. UsingBayesian inference, this allows us to detect quantum jumps faster than thereadout resonator response time $2/\kappa$, where $\kappa$ is the bandwidth ofthe readout resonator.

Minimizing the discrimination time for quantum states of an artificial atom