2 citations · 3 across the 6 of their papers we have counts for
8 papers · 1 filter
Operational quasiprobability formulation of non-signaling in time for macrorealism violations
Stefano Gherardini, Paolo Solinas
In this paper, we introduce the concept of quasi non-signaling in time (QNSIT), which extends non-signaling in time (NSIT) to quasiprobability distributions. QNSIT requires that th…
Operational criterion for Wigner function negativity
Paolo Solinas, Beatrice Donelli, Stefano Gherardini
We introduce an operational criterion to identify Wigner function (WF) negativity for an arbitrary quantum state within the framework of quantum non-demolition measurements. This c…
Quantumness certification via non-demolition measurements
Paolo Solinas, Stefano Gherardini
The fundamental question of when a static or dynamic system should be deemed intrinsically quantum remains a challenge to address in absolute terms. In this regard, a critical requ…
Resource reduction for variational quantum algorithms by non-demolition measurements
Dario Melegari, Rabia Abdul Razaq, Giovanni Minuto +1
We present a comparative study of two implementations of a variational quantum algorithm aimed at minimizing the energy of a complex quantum system. In one implementation, we extra…
Quantum simulations of macrorealism violation via the QNDM protocol
D. Melegari, M. Cardi, P. Solinas
The Leggett-Garg inequalities have been proposed to identify the quantum behaviour of a system; specifically, the violation of macrorealism. They are usually implemented by perform…
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…
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…
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…