Observation of constructive interference at the edge of quantum ergodicity.

ABSTRACT: The dynamics of quantum many-body systems is characterized by quantum observables that are reconstructed from correlation functions at separate points in space and time^1-3. In dynamics with fast entanglement generation, however, quantum observables generally become insensitive to the details of the underlying dynamics at long times due to the effects of scrambling. To circumvent this limitation and enable access to relevant dynamics in experimental systems, repeated time-reversal protocols have been successfully implemented⁴. Here we experimentally measure the second-order out-of-time-order correlators (OTOC⁽²⁾)^5-18 on a superconducting quantum processor and find that they remain sensitive to the underlying dynamics at long timescales. Furthermor

SUBMITTER: Google Quantum AI and Collaborators 

PROVIDER: S-EPMC12545170 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature