activity
20232026
most citedUnitary-invariant witnesses of quantum imaginarity

41 citations · 109 across the 16 of their papers we have counts for

collaborators

16 papers

quant-ph2026

Coherence as a resource for -box and quantum pigeonhole paradoxes

Som Kanjilal, Rafael Wagner, Ernesto F. Galvão

Pre- and post-selection (PPS) paradoxes are striking demonstrations of quantum nonclassicality. Logical PPS paradoxes, where inferences made with the Aharonov-Bergmann-Lebowitz (AB…

quant-ph2026

Commutativity from a single Bargmann invariant equality

Rafael Wagner, Ernesto F. Galvão

Noncommutativity of states and observables is a fundamental signature of quantum theory, and a minimal requirement for nonclassicality. We provide a universal necessary and suffici…

quant-ph2026

Interaction-free measurement of multiple objects using a universal integrated photonic processor

Sara Franco, Anita Camillini, Ernesto F. Galvão

The phenomenon of interaction-free measurement (IFM) enables the probabilistic detection of an absorbing object with reduced photon absorption. We report the experimental implement…

quant-ph2026

Native linear-optical protocol for efficient multivariate trace estimation

Leonardo Novo, Marco Robbio, Ernesto F. Galvão +1

The Hong-Ou-Mandel test estimates the overlap between spectral functions characterizing the internal degrees of freedom of two single photons. It can be viewed as a photon-native p…

quant-ph2025

Optimal distillation of photonic indistinguishability

Francesco Hoch, Anita Camillini, Giovanni Rodari +13

Imperfect photons' indistinguishability limits the performance of photonic quantum communication and computation . Distillation protocols, inspired by entanglement purification, en…

quant-ph2025

Measuring unitary invariants with the quantum switch

Pedro C. Azado, Rafael Wagner, Rui S. Barbosa +1

Bargmann invariants, multivariate traces of states, completely characterize any unitary-invariant property of a set of states. Unitary invariants enable the description of quantum…