1.3k citations · 8k across the 114 of their papers we have counts for
114 papers
Mutual Information Bounded by Fisher Information
Wojciech Górecki, Xi Lu, Chiara Macchiavello +1
We derive a general upper bound to mutual information in terms of the Fisher information. The bound may be further used to derive a lower bound for the Bayesian quadratic cost. The…
A protocol for global multiphase estimation
Giovanni Chesi, Roberto Rubboli, Alberto Riccardi +2
Global estimation strategies allow to extract information on a phase or a set of phases without any prior knowledge, which is, instead, required for local estimation strategies. We…
Quantum Speed Limit for Change of Basis
Moein Naseri, Chiara Macchiavello, Dagmar Bruß +2
Quantum speed limits provide ultimate bounds on the time required to transform one quantum state into another. Here, we extend the notion of quantum speed limits to collections of…
Robustness of quantum reinforcement learning under hardware errors
Andrea Skolik, Stefano Mangini, Thomas Bäck +2
Variational quantum machine learning algorithms have become the focus of recent research on how to utilize near-term quantum devices for machine learning tasks. They are considered…
Pauli transfer matrix direct reconstruction: channel characterization without full process tomography
Simone Roncallo, Lorenzo Maccone, Chiara Macchiavello
We present a tomographic protocol for the characterization of multiqubit quantum channels. We discuss a specific class of input states, for which the set of Pauli measurements at t…
Construction of efficient Schmidt number witnesses for high-dimensional quantum states
Nikolai Wyderka, Giovanni Chesi, Hermann Kampermann +2
Recent progress in quantum optics has led to setups that are able to prepare high-dimensional quantum states for quantum information processing tasks. As such, it is of importance…