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quant-ph2026
Causal confusion in quantum systems: distinguishing direct cause and common cause
Krisztina Tolotti, Riley Blank-Matthews, Arthur J. Parzygnat
The joint expectation values of quantum observables measured by two parties typically depend on the causal structure of the measurement protocol. The two causal structures we inves…
quant-ph2026
Quantum encodings that preserve persistent homology
Arthur J. Parzygnat, Andrew Vlasic
Given a data set with a notion of distance, such as a point cloud in Euclidean space, topological data analysis (TDA) uses techniques from algebraic topology and metric geometry to…