Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Pegg, David T."'
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 current information. We present the foundations of quantum retrodicti
Externí odkaz:
http://arxiv.org/abs/2103.06074
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 by reducing the number of quantum postulates used by Busch. We do not a
Externí odkaz:
http://arxiv.org/abs/1308.0946
Autor:
Hall, Michael J. W., Pegg, David T.
Publikováno v:
Phys. Rev. A 86 (2012) 056101
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, 044103 (2012)]. For Hamiltonians generating periodic evolution, we sh
Externí odkaz:
http://arxiv.org/abs/1206.4385
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 very general form. As an example, we analyse the effects of these meas
Externí odkaz:
http://arxiv.org/abs/quant-ph/0602153
Autor:
Pegg, David T., Jeffers, John
Publikováno v:
J. Mod. Opt. 52, 1835 (2005)
All compositions of a mixed-state density operator are equivalent for the prediction of the probabilities of future outcomes of measurements. For retrodiction, however, this is not the case. The retrodictive formalism of quantum mechanics provides a
Externí odkaz:
http://arxiv.org/abs/quant-ph/0509107
Autor:
Pegg, David T.
Publikováno v:
D. T. Pegg, Times' arrows, quantum measurement and superluminal behavior (eds. D. Mugnai, A. Ranfagni and L. S. Schulman) (Consiglio Nazionale Delle Richerche, Roma, 2001) p. 113
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-consistent loops are possible. We show that, for one particular case at
Externí odkaz:
http://arxiv.org/abs/quant-ph/0506141
Publikováno v:
Eur. Phys. J. D 22, 495 (2003)
We use retrodictive quantum theory to analyse two-photon quantum imaging systems. The formalism is particularly suitable for calculating conditional probability distributions.
Comment: 5 pages, 3 figures
Comment: 5 pages, 3 figures
Externí odkaz:
http://arxiv.org/abs/quant-ph/0303099
Publikováno v:
Phys. Rev. A 66, 022106 (2002)
Quantum retrodiction involves finding the probabilities for various preparation events given a measurement event. This theory has been studied for some time but mainly as an interesting concept associated with time asymmetry in quantum mechanics. Rec
Externí odkaz:
http://arxiv.org/abs/quant-ph/0208082
Publikováno v:
J. Mod. Opt. 49, 913, 2002
The conventional postulate for the probabilistic interpretation of quantum mechanics is asymmetric in preparation and measurement, making retrodiction reliant on inference by use of Bayes' theorem. Here, a more fundamental symmetric postulate is pres
Externí odkaz:
http://arxiv.org/abs/quant-ph/0207174
Publikováno v:
J. Mod. Opt. 49, 1175 (2002)
In the Jaynes-Cummings model a two-level atom interacts with a single-mode electromagnetic field. Quantum mechanics predicts collapses and revivals in the probability that a measurement will show the atom to be excited at various times after the init
Externí odkaz:
http://arxiv.org/abs/quant-ph/0207175