منابع مشابه
Decoherent Histories and Quantum Maps
Discrete maps play an important role in the investigation of dynamical features of complex classical systems, especially within the theory of chaos. Similarly, quantum maps have proven to be a very useful mathematical tool within the study of complex quantum dynamical systems. Using the decoherent histories formulation of quantum mechanics we consider a particular framework for studying quantum...
متن کاملQuantum Zeno Effect in the Decoherent Histories
The quantum Zeno effect arises due to frequent observation. That implies the existence of some experimenter and its interaction with the system. In this contribution, we examine what happens for a closed system if one considers a quantum Zeno type of question, namely what is the probability of a system, remaining always in a particular subspace. This has implications to the arrival time problem...
متن کاملQuantum jumps as decoherent histories
Quantum open systems are described in the Markovian limit by master equations in Lindblad form. I argue that common “quantum jumps” techniques, which solve the master equation by unraveling its evolution into stochastic trajectories in Hilbert space, correspond closely to a particular set of decoherent histories. This is illustrated by a simple model of a photon counting experiment. Recently a ...
متن کاملDecoherent Histories Approach to the Arrival Time Problem
What is the probability of a particle entering a given region of space at any time between t 1 and t 2 ? Standard quantum theory assigns probabilities to alternatives at a fixed moment of time and is not immediately suited to questions of this type. We use the decoherent histories approach to quantum theory to compute the probability of a non-relativistic particle crossing x = 0 during an inter...
متن کاملDecoherent histories and quantum state diffusion.
We demonstrate a close connection between the decoherent histories (DH) approach to quantum mechanics and the quantum state diffusion (QSD) picture, for open quantum systems described by a master equation of Lindblad form. The (physically unique) set of variables that localize in the QSD picture also define an approximately decoherent set of histories in the DH approach. The degree of localizat...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2011
ISSN: 1742-6596
DOI: 10.1088/1742-6596/283/1/012041