3 papers
quant-ph2017
Reaching for the quantum limits in the simultaneous estimation of phase and phase diffusion
Magdalena Szczykulska, Tillmann Baumgratz, Animesh Datta
Phase diffusion invariably accompanies all phase estimation strategies -- quantum or classical. A precise estimation of the former can often provide valuable understanding of the p…
quant-ph2016
Efficient tomography of a quantum many-body system
B. P. Lanyon, C. Maier, M. Holzäpfel +10
Quantum state tomography (QST) is the gold standard technique for obtaining an estimate for the state of small quantum systems in the laboratory. Its application to systems with mo…
quant-ph2016
Multi-parameter Quantum Metrology
Magdalena Szczykulska, Tillmann Baumgratz, Animesh Datta
The simultaneous quantum estimation of multiple parameters can provide a better precision than estimating them individually. This is an effect that is impossible classically. We re…