Pour vous authentifier, privilégiez eduGAIN / To authenticate, prefer eduGAINeu

Post-selection-free Measurement-Induced Phase Transition in Driven Atomic Gases with Collective Decay

Jun 23, 2023, 12:00 PM
Institut Pascal

Institut Pascal

Rue André Rivière 91400 Orsay


Rosario Fazio (The Abdus Salam International Centre for Theoretical Physics)


I will discuss the properties of a monitored ensemble of atoms driven by a laser field and in the presence of collective decay.
By varying the strength of the external drive, the atomic cloud undergoes a measurement-induced phase transition separating
two phases with entanglement entropy scaling sub-extensively with the system size. The critical point coincides with the transition
to a superradiant spontaneous emission. This setup is implementable in current light-matter interaction devices, and most notably,
the monitored dynamics is free from the post-selection measurement problem, even in the case of imperfect monitoring.

G. Passarelli, X. Turkeshi, A. Russomanno, P. Lucignano, M. Schirò, R. Fazio https://arxiv.org/abs/2306.00841

Presentation materials

There are no materials yet.