Measuring the adiabatic non-Hermitian Berry phase in feedback-coupled oscillators
Yaashnaa Singhal, Enrico Martello, Shraddha Agrawal, Tomoki Ozawa, Hannah M. Price, Bryce Gadway
Abstract
Measurement of the adiabatic non-Hermitian Berry phase in a nonreciprocal mechanical metamaterial is performed. The measured hallmark features of the adiabatic Berry phase include the reversibility of growth and decay as well as a non-Hermitian analog of the Aharonov-Bohm effect.
Topics & Concepts
Adiabatic processGeometric phaseHermitian matrixMetamaterialPhysicsPhase (matter)BerryQuantum mechanicsQuantum electrodynamicsBiologyBotanyQuantum Mechanics and Non-Hermitian PhysicsTopological Materials and PhenomenaMechanical and Optical Resonators