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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 entanglement with Discrete Variable (DV) systems, leading to superpositions of CV Gaussia…