The relation between noise and disturbance is investigated within the general framework of Galois connections. Within this framework, we introduce the notion of leak of information, mathematically defined as one of the two closure maps arising from the observable-channel compatibility relation. We provide a physical interpretation for it, and we give a comparison with the analogous closure maps associated with joint measurability and simulability for quantum observables.

Noise–Disturbance Relation and the Galois Connection of Quantum Measurements

Toigo, Alessandro
2019-01-01

Abstract

The relation between noise and disturbance is investigated within the general framework of Galois connections. Within this framework, we introduce the notion of leak of information, mathematically defined as one of the two closure maps arising from the observable-channel compatibility relation. We provide a physical interpretation for it, and we give a comparison with the analogous closure maps associated with joint measurability and simulability for quantum observables.
2019
Noise–disturbance relation; Incompatibility; Galois connection; Quantum measurements
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1085557
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