TITLE:  ” Large deviations and conditioned monitored quantum systems: a tensor network approach  “

SPEAKER:  Maria Cea Fernandez, Max-Plank-Institut fur Quantenoptik, Garching, Germany & Munich Center for Quantum Science and Technology (MCQST),  Munchen, Germany

ABSTRACT:  Coexistence of different dynamical phases is a hallmark of glassy dynamics. This is well-studied in classical systems where the underlying theoretical framework is that of large deviation theory. The presence of a similar phase coexistence has been suggested in monitored quantum many-body systems, but the lack of suitable methods has yet prevented a systematic large deviation analysis. Here we present a tensor network framework that allows the application of large deviation theory to large quantum systems. Building on this, we locate a series of first-order dynamical phase transitions in a monitored discrete-time many-body quantum dynamics, at the level of the trajectory space. Crucially, our approach provides access not only to large-deviation statistics but also to conditioned quantum many-body states, enabling a microscopic characterization of the dynamical phases and their coexistence.

DATE: TUESDAY, June 30th, 2026

TIME: 11:40 am

LOCATION: Theoretical Physics Seminar Room