3 papers
quant-ph2025
How "Quantum" is your Quantum Computer? Macrorealism-based Benchmarking via Mid-Circuit Parity Measurements
Ben Zindorf, Lorenzo Braccini, Debarshi Das +1
To perform meaningful computations, Quantum Computers (QCs) must scale to macroscopic levels - i.e., to a large number of qubits - an objective pursued by most quantum companies. H…
quant-ph2025
Nonclassicality of a Macroscopic Qubit-Ensemble via Parity Measurement Induced Disturbance
Lorenzo Braccini, Debarshi Das, Ben Zindorf +3
We propose an experimental scheme to test the nonclassicality of a macroscopic ensemble of qubits, through the violation of the classical notion of macrorealism (MR) via the fundam…
quant-ph2025
Superpositions of Quantum Gaussian Processes
Lorenzo Braccini, Sougato Bose, Alessio Serafini
We generalise the Gaussian formalism of Continuous Variable (CV) systems to describe their interactions with qubits/qudits that result in quantum superpositions of Gaussian process…