Speaker: Javier del Pino
Affiliation: Universidad de Constanza
Date: Tuesday, 30 January 2024 at 12:00
Location: Online seminar
In this talk, I will discuss how optomechanical cavities can engineer artificial magnetic fields for nanomechanical vibrations, orchestrated by light. This leads to acoustic chirality and non-Hermitian topological states. Theoretical ideas are tested experimentally in optomechanical nanobeam photonic crystals. These optomechanical systems support telecom-frequency optical resonances linked to multiple mechanical overtones with high coherence. By controlling the phase of lasers in a cavity, we can tune strong mechanical interactions that imprint nonreciprocal Peierls phases that break time-reversal symmetry – akin to the Aharonov-Bohm effect for electrons[1].