Published 2021 | Version v1
Journal article

Emergence of jumps in quantum trajectories via homogeneization

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Description

In the strong noise regime, we study the homogeneization of quantum trajectories i.e. stochastic processes appearing in the context of quantum measurement. When the generator of the average semi-group can be separated into three distinct time scales, we start by describing a homogenized limiting semi-group. This result is of independent interest and is formulated outside of the scope of quantum trajectories. Going back to the quantum context, we show that, in the Meyer-Zheng topology, the time-continuous quantum trajectories converge weakly to the discontinuous trajectories of a pure jump Markov process. Notably, this convergence cannot hold in the usual Skorokhod topology.

Abstract

45 pages

Abstract

International audience

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Identifiers

URL
https://hal.archives-ouvertes.fr/hal-03157272
URN
urn:oai:HAL:hal-03157272v1