73 citations · 267 across the 12 of their papers we have counts for
13 papers
Quantum retrodiction: foundations and controversies
Stephen M. Barnett, John Jeffers, David T. Pegg
Prediction is the making of statements, usually probabilistic, about future events based on current information. Retrodiction is the making of statements about past events based on…
Quantum probability rule: a generalisation of the theorems of Gleason and Busch
Stephen M. Barnett, James D. Cresser, John Jeffers +1
Busch's theorem deriving the standard quantum probability rule can be regarded as a more general form of Gleason's theorem. Here we show that a further generalisation is possible b…
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,…
Measurement master equation
James D. Cresser, Stephen M. Barnett, John Jeffers +1
We derive a master equation describing the evolution of a quantum system subjected to a sequence of observations. These measurements occur randomly at a given rate and can be of a…
Binomial states and the phase distribution measurement of weak optical fields
K. L. Pregnell, D. T. Pegg
We show that the eight-port interferometer used by Noh, Fougères, and Mandel [Phys. Rev. Lett. {\bf 71}, 2579 (1993)] to measure their operational phase distribution of light can a…
Quantum mechanics and the time travel paradox
David T. Pegg
The closed causal chains arising from backward time travel do not lead to paradoxes if they are self consistent. This raises the question as to how physics ensures that only self-c…