4 papers
Quantum enhanced metrology of Hamiltonian parameters beyond the Cramèr-Rao bound
Luigi Seveso, Matteo G. A. Paris
This is a tutorial aimed at illustrating some recent developments in quantum parameter estimation beyond the Cramèr-Rao bound, as well as their applications in quantum metrology. O…
Quantum sensing of curvature
Daniele Bonalda, Luigi Seveso, Matteo G. A. Paris
We address the problem of sensing the curvature of a manifold by performing measurements on a particle constrained to the manifold itself. In particular, we consider situations whe…
The walker speaks its graph: global and nearly-local probing of the tunnelling amplitude in continuous-time quantum walks
Luigi Seveso, Claudia Benedetti, Matteo G. A. Paris
We address continuous-time quantum walks on graphs, and discuss whether and how quantum-limited measurements on the walker may extract information on the tunnelling amplitude betwe…
Trade-off between information and disturbance in qubit thermometry
Luigi Seveso, Matteo G. A. Paris
We address the trade-off between information and disturbance in qubit thermometry from the perspective of quantum estimation theory. Given a quantum measurement, we quantify inform…