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

A fundamental requirement for the emergence of classical behavior from anunderlying quantum description is that certain observed quantum systems make atransition to chaotic dynamics as their action is increased relative to$\hbar$. While experiments have demonstrated some aspects of this transition,the emergence of quantum trajectories with a positive Lyapunov exponent hasnever been observed directly. Here, we remove a major obstacle to achievingthis goal by showing that, for the Duffing oscillator, the transition to apositive Lyapunov exponent can be resolved clearly from observed trajectorieseven with measurement efficiencies as low as 20%. We also find that thepositive Lyapunov exponent is robust to highly mixed, low purity states and tovariations in the parameters of the system.

Observing quantum chaos with noisy measurements and highly mixed states