The problem of quantum measurement of a qubit ~twolevel system! received renewed attention recently in relation to its importance for quantum computing. The case of sufficiently fast ~instantaneous! measurement can be readily described by ‘‘orthodox’’ collapse postulate @1#, and this is the case assumed at present by all quantum algorithms. However, in practice, especially for solid-state qubit...

We give an explicit axiomatic formulation of the quantum measurement theory which is free of the projection postulate. It is based on the generalized nondemolition principle applicable also to the unsharp, continuous– spectrum and continuous-in-time observations. The “collapsed state–vector” after the “objectification” is simply treated as a random vector of the a posteriori state given by the ...

There is currently great interest in experiments which obtain useful information about a quantum system or state in single runs of an experiment. Very recently it has been possible to distinguish the quantum mechanical and classical models of the interaction of an atom with a mode of a high finesse optical cavity as the result of continuous monitoring of the output light while a single atom pas...

In the synchrony judgment paradigm, observers judge whether a click precedes or follows the onset of a light flash and, on other trials, whether or not a click precedes light termination. The interclick interval defines the duration of visible persistence. An elaboration of this method consists of two phases: In Phase 1, the luminance of a reference stimulus is psychophysically matched to the p...

in previous studies we first concentrated on utilizing crisp simulationto produce discrete event fuzzy systems simulations. then we extendedthis research to the simulation of continuous fuzzy systems models. in this paperwe continue our study of continuous fuzzy systems using crisp continuoussimulation. consider a crisp continuous system whose evolution depends ondifferential equations. such a ...