383 citations · 4.5k across the 82 of their papers we have counts for
9 papers · 1 filter
Experimental test of universal complementarity relations
Morgan M. Weston, Michael J. W. Hall, Matthew S. Palsson +2
Complementarity restricts the accuracy with which incompatible quantum observables can be jointly measured. Despite popular conception, the Heisenberg uncertainty relation does not…
Entanglement verification and steering when Alice and Bob cannot be trusted
Eric G. Cavalcanti, Michael J. W. Hall, Howard M. Wiseman
Various protocols exist by which a referee can be convinced that two observers share an entangled resource. Such protocols typically specify the types of communication allowed, and…
Optimal Heisenberg-style bounds for the average performance of arbitrary phase estimates
Dominic W. Berry, Michael J. W. Hall, Marcin Zwierz +1
The ultimate bound to the accuracy of phase estimates is often assumed to be given by the Heisenberg limit. Recent work seemed to indicate that this bound can be violated, yielding…
Nonlocal signaling in the configuration space model of quantum-classical interactions
Michael J. W. Hall, Marcel Reginatto, C. M. Savage
When interactions are turned off, the theory of interacting quantum and classical ensembles due to Hall and Reginatto is shown to suffer from a nonlocal signaling effect that is ef…
Information geometry, dynamics and discrete quantum mechanics
Marcel Reginatto, Michael J. W. Hall
We consider a system with a discrete configuration space. We show that the geometrical structures associated with such a system provide the tools necessary for a reconstruction of…
Comment on "Quantum phase for an arbitrary system with finite-dimensional Hilbert space"
Michael J. W. Hall, David T. Pegg
A construction of covariant quantum phase observables, for Hamiltonians with a finite number of energy eigenvalues, has been recently given by D. Arsenovic et al. [Phys. Rev. A 85,…
Does nonlinear metrology offer improved resolution? Answers from quantum information theory
Michael J. W. Hall, Howard M. Wiseman
A number of authors have suggested that nonlinear interactions can enhance resolution of phase shifts beyond the usual Heisenberg scaling of 1/n, where n is a measure of resources…
The effects of reduced "free will" on Bell-based randomness expansion
Dax Enshan Koh, Michael J. W. Hall, Setiawan +5
With the advent of quantum information, the violation of a Bell inequality is used as evidence of the absence of an eavesdropper in cryptographic scenarios such as key distribution…
Heisenberg-style bounds for arbitrary estimates of shift parameters including prior information
Michael J. W. Hall, Howard M. Wiseman
A rigorous lower bound is obtained for the average resolution of any estimate of a shift parameter, such as an optical phase shift or a spatial translation. The bound has the asymp…