Enhanced quantum sensing with hybrid exceptional-diabolic singularities

We report an enhanced sensitivity for detecting linear perturbations near hybrid (doubly degenerated) exceptional-diabolic (HED) singular points in a four mode bosonic system. The sensitivity enhancement is attributed to a singular response function, with the pole order determining the scaling of es...

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Bibliographic Details

Published in:	New Journal of Physics
Main Authors:	Javid Naikoo, Ravindra W Chhajlany, Adam Miranowicz
Format:	Article
Language:	English
Published:	IOP Publishing 2025-01-01
Subjects:	hybrid exceptional-diabolic (HED) singularities quantum metrology and sensing quantum Fisher information
Online Access:	https://doi.org/10.1088/1367-2630/addc12