Probe Incompatibility in Multiparameter Noisy Quantum Channel Estimation
Francesco Albarelli, Rafał Demkowicz-Dobrzański · Quantum Information and Measurement VI 2021 · 2021
We derive fundamental bounds on the maximal achievable precision in multi-parameter noisy quantum channel estimation, valid under the most general entanglement-assisted adaptive strategy, which are tighter than the bounds obtained by a direct use of single-parameter bounds.