A new preprint by Eric R. Bittner and Carlos Silva-Acuña of the Canada Excellence Research Chair in Light-Matter Interactions (CERC-LM) explores the geometric foundations of response in open quantum systems. In“Geometric Response in Open Quantum Systems: Coherence, Curvature, and Susceptibility”. This work introduces a response-geometric framework for open quantum systems, revealing how coherence, curvature, and susceptibility shape both reciprocal and nonreciprocal responses in nonequilibrium quantum environments. The study identifies geometric work as a measurable signature of nonreciprocal behavior, providing new insights into the geometry of quantum response.