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quant-ph2026

Finite path integrals on stochastic branched structures

Roukaya Dekhil, Clifford Ellgen, Bruno Klajn

In this paper, we present a statistical model of spacetime trajectories based on a finite collection of paths organized into a branched manifold. For each configuration of the bran…

quant-ph2026

Time uncertainty and fundamental sensitivity limits in quantum sensing: application to optomechanical gravimetry

Salman Sajad Wani, Saif Al-Kuwari, Arshid Shabir +3

High-sensitivity accelerometers and gravimeters, achieving the ultimate limits of measurement sensitivity are key tools for advancing both fundamental and applied physics. While nu…

quant-ph2026

On-chip semi-device-independent quantum random number generator exploiting contextuality

Maddalena Genzini, Caterina Vigliar, Mujtaba Zahidy +6

We present a semi-device-independent quantum random number generator (QRNG) based on the violation of a contextuality inequality, implemented by the integration of two silicon phot…

quant-ph2025

Measurement incompatibility in Bayesian multiparameter quantum estimation

Francesco Albarelli, Dominic Branford, Jesús Rubio

We present a comprehensive and pedagogical formulation of Bayesian multiparameter quantum estimation. Within this framework, we analyse the role of measurement incompatibility and…

quant-ph2025

Overshifted Parameter-Shift Rules: Optimizing Complex Quantum Systems with Few Measurements

Leonardo Banchi, Dominic Branford, Chetan Waghela

Gradient-based optimization is a key ingredient of variational quantum algorithms, with applications ranging from quantum machine learning to quantum chemistry and simulation. The…

quant-ph2025★ 1 cited

Unified boson sampling

Luca Bianchi, Carlo Marconi, Laura Ares +2

Boson sampling is a key candidate for demonstrating quantum advantage, and has already yielded significant advances in quantum simulation, machine learning, and graph theory. In th…