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Bifurcation in Quan...
Bifurcation in Quantum Measurement
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- Eriksson, Karl-Erik (författare)
- Division of Physical Resource Theory, Department of Space, Earth and Environment, Chalmers University of Technology, Göteborg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Cederwall, Martin, 1961 (författare)
- Division of Theoretical Physics, Department of Physics, Chalmers University of Technology, Göteborg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Lindgren, Kristian, 1960 (författare)
- Division of Physical Resource Theory, Department of Space, Earth and Environment, Chalmers University of Technology, Göteborg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Sjöqvist, Erik (författare)
- Uppsala universitet,Materialteori,Quantum information theory
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(creator_code:org_t)
- arXiv, 2017
- Engelska.
- Relaterad länk:
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https://arxiv.org/ab...
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https://urn.kb.se/re...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- We present a generic model of (non-destructive) quantum measurement. It consists of two-level system μ interacting with a larger system A, in such a way that if μ is initially in one of the chosen basis states, it does not change but makes A change into a corresponding state (entanglement). The μA-interaction is described as a scattering process. Internal (unknown) variables of A may influence the transition amplitudes. It is assumed that the statistics of these variables is such that, in the mean, the μA-interaction is neutral with respect to the chosen basis states. It is then shown that, for a given initial state of μ, in the limit of a large system A, the statistics of the ensemble of available initial states leads to a bifurcation: those initial states of A that are efficient in leading to a final state, are divided into two separated subsets. For each of these subsets, μ ends up in one of the basis states. The probabilities in this branching confirm the Born rule.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Quantum measurement
- Physics with spec. in Atomic, Molecular and Condensed Matter Physics
- Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik
- Fysik
- Physics
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