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Regensburg 2022 – wissenschaftliches Programm

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QI: Fachverband Quanteninformation

QI 14: Quantum Foundations

QI 14.9: Vortrag

Freitag, 9. September 2022, 12:00–12:15, H9

Measurement-based models of friction and dissipative collapse — •Michael Gaida and Stefan Nimmrichter — Universität Siegen

Collapse models are objective modifications of quantum theory that aim to solve the measurement problem. One of the most studied models is the Continuous Spontaneous Localisation (CSL) model and its dissipative extension. We present a protocol based on randomly occurring Gaussian position measurements and unitary feedback operations that reproduces the single particle dynamics of dissipative CSL. Inspired by this protocol, we introduce a class of measurement-based models, implementing classical friction forces. We find that the specific model for linear Stokes friction reproduces the single-particle dissipative CSL master equation, as well.

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