We investigate in the framework of quantum noise theory how the striking boundary sensitivity recently discovered in the context of non-Hermitian (NH) topological phases may be harnessed to devise novel quantum sensors. Specifically. we study a quantum-optical setting of coupled modes arranged in an array with broken ring geometry that would realize a NH topological phase in the class... https://allfixelectricales.shop/product-category/fridge-door-shelf-fingers/