Noise resilient exceptional-point voltmeters enabled by oscillation quenching phenomena.

ABSTRACT: Exceptional point degeneracies (EPD) of linear non-Hermitian systems have been recently utilized for hypersensitive sensing. This proposal exploits the sublinear response that the degenerate frequencies experience once the system is externally perturbed. The enhanced sensitivity, however, might be offset by excess (fundamental and/or technical) noise. Here, we developed a self-oscillating nonlinear platform that supports transitions between two distinct oscillation quenching mechanisms - one having a spatially symmetric steady-state, and the other with an asymmetric steady-state - and displays nonlinear EPDs (NLEPDs) that can be employed for noise-resilient sensing. The experimental setup incorporates a nonlinear electronic dimer with voltage-sensitive coupling and demonstrates two-orders

SUBMITTER: Suntharalingam A 

PROVIDER: S-EPMC10484910 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature