4 papers · 1 filter
Uncertainty limits for post-selected metrology
Ming Ji, Holger F. Hofmann
For unitary transformations, the quantum Fisher information (QFI) of a pure state is given by the uncertainty of the generator in that state. In post-selected metrology, the QFI is…
Enhanced quantum parameter estimation based on the Hardy paradox
Ming Ji, Yuxiang Yang, Holger F. Hofmann
Statistical paradoxes such as the Hardy paradox and the enhancement of phase estimation via post-selection both draw upon the same non-classical features of quantum statistics desc…
External quantum fluctuations select measurement contexts
Jonte R. Hance, Ming Ji, Tomonori Matsushita +1
Quantum paradoxes show that the outcomes of different quantum measurements cannot be described by a single measurement-independent reality. Any theoretical description of a quantum…
Tracing quantum correlations back to collective interferences
Ming Ji, Jonte R. Hance, Holger F. Hofmann
In this paper, we investigate the possibility of explaining nonclassical correlations between two quantum systems in terms of quantum interferences between collective states of the…