41 citations · 109 across the 16 of their papers we have counts for
18 papers
Characterizing Photonic Partial Distinguishability Through Gram Matrix Tomography
Marcin Kotowski, Marco Robbio, Oliver Reardon-Smith +4
Partial distinguishability affects multiphoton interference, which is central to large-scale photonic experiments such as Boson Sampling and to applications of multiphoton states a…
Optimal interferometric certification of multi-photon indistinguishability
Marco Robbio, Michał Oszmaniec, Nicolas J. Cerf +2
Multiphoton indistinguishability is a key resource for photonic quantum technologies, yet its characterization typically relies on resource-intensive methods. In this work, we deve…
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…
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…
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…
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…
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…
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…
An Elementary Characterization of Bargmann Invariants
Sagar Silva Pratapsi, João Gouveia, Leonardo Novo +1
Bargmann invariants, also known as multivariate traces of quantum states , are unitary invariant quantities used to characterize weak values,…
Estimation of multivariate traces of states given partial classical information
Kyrylo Simonov, Rafael Wagner, Ernesto Galvão
Bargmann invariants of order , defined as multivariate traces of quantum states , are useful in applications ranging from quantum metrology to cert…
Experimental observation of counter-intuitive features of photonic bunching
Giovanni Rodari, Carlos Fernandes, Eugenio Caruccio +14
Bosonic bunching is a term used to describe the well-known tendency of bosons to bunch together, and which differentiates their behaviour from that of fermions or classical particl…
Polarization-encoded photonic quantum-to-quantum Bernoulli factory based on a quantum dot source
Giovanni Rodari, Francesco Hoch, Alessia Suprano +6
A Bernoulli factory is a randomness manipulation routine that takes as input a Bernoulli random variable, outputting another Bernoulli variable whose bias is a function of the inpu…
Modular Quantum-to-Quantum Bernoulli Factory in an Integrated Photonic Processor
Francesco Hoch, Taira Giordani, Luca Castello +9
Generation and manipulation of randomness is a relevant task for several applications of information technology. It has been shown that quantum mechanics offers some advantages for…
Reducing depth and measurement weights in Pauli-based computation
Filipa C. R. Peres, Ernesto F. Galvão
Pauli-based computation (PBC) is a universal measurement-based quantum computation model steered by an adaptive sequence of independent and compatible Pauli measurements on separab…
Semi-device independent characterization of multiphoton indistinguishability
Giovanni Rodari, Leonardo Novo, Riccardo Albiero +15
Multiphoton indistinguishability is a central resource for quantum enhancement in sensing and computation. Developing and certifying large scale photonic devices requires reliable…
Certifying nonstabilizerness in quantum processors
Rafael Wagner, Filipa C. R. Peres, Emmanuel Zambrini Cruzeiro +1
Nonstabilizerness, also known as magic, is a crucial resource for quantum computation. The growth in complexity of quantum processing units (QPUs) demands robust and scalable techn…
Unitary-invariant witnesses of quantum imaginarity
Carlos Fernandes, Rafael Wagner, Leonardo Novo +1
Quantum theory is traditionally formulated using complex numbers. This imaginarity of quantum theory has been quantified as a resource with applications in discrimination tasks, ps…
Experimental certification of contextuality, coherence and dimension in a programmable universal photonic processor
Taira Giordani, Rafael Wagner, Chiara Esposito +11
Quantum superposition of high-dimensional states enables both computational speed-up and security in cryptographic protocols. However, the exponential complexity of tomographic pro…