3 papers
quant-ph2020
On the quantumness of multiparameter estimation problems for qubit systems
Sholeh Razavian, Matteo G. A. Paris, Marco G. Genoni
The estimation of more than one parameter in quantum mechanics is a fundamental problem with relevant practical applications. In fact, the ultimate limits in the achievable estimat…
astro-ph.CO2018
The zoo plot meets the swampland: mutual (in)consistency of single-field inflation, string conjectures, and cosmological data
William H. Kinney, Sunny Vagnozzi, Luca Visinelli
We consider single-field inflation in light of string-motivated "swampland" conjectures suggesting that effective scalar field theories with a consistent UV completion must have fi…
quant-ph2018
Quantum thermometry by single-qubit dephasing
Sholeh Razavian, Claudia Benedetti, Matteo Bina +2
We address the dephasing dynamics of a qubit as an effective process to estimate the temperature of its environment. Our scheme is inherently quantum, since it exploits the sensiti…