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quant-ph2024
Quantum Non-Demolition Measurements and Leggett-Garg inequality
Paolo Solinas, Stefano Gherardini
Quantum non-demolition measurements define a non-invasive protocol to extract information from a quantum system that we aim to monitor. They exploit an additional quantum system th…
quant-ph2024★ 1 cited
On the Measurement of the Unruh Effect Through Extended Quantum Thermometers
M. Cardi, P. Solinas, N. Zanghì
The Unruh effect, predicting a thermal reservoir for accelerating systems, calls for a more refined understanding of measurement processes involving quantum systems as thermometers…
quant-ph2024★ 2 cited
A Novel Approach to Reduce Derivative Costs in Variational Quantum Algorithms
Giovanni Minuto, Dario Melegari, Simone Caletti +1
We present a detailed numerical study of an alternative approach, named Quantum Non-Demolition Measurement (QNDM), to efficiently estimate the gradients or the Hessians of a quantu…