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Open Quantum Systems Decoherence

Linear Quantum Entropy and Non-Hermitian Hamiltonians

arXiv

Authors: Alessandro Sergi, Paolo V. Giaquinta

Year

2016

Paper ID

41757

Status

Preprint

Abstract Read

~2 min

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Abstract

We consider the description of open quantum systems with probability sinks (or sources) in terms of general non-Hermitian Hamiltonians. Within such a framework, we study novel possible definitions of the quantum linear entropy as an indicator of the flow of information during the dynamics. Such linear entropy functionals are necessary in the case of a partially Wigner-transformed non-Hermitian Hamiltonian (which is typically useful within a mixed quantum-classical representation). Both the case of a system represented by a pure non-Hermitian Hamiltonian as well as that of the case of non-Hermitian dynamics in a classical bath are explicitly considered.

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We consider the description of open quantum systems with probability sinks (or sources) in terms of general non-Hermitian Hamiltonians.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1612.05917 [2] arXiv https://arxiv.org/abs/1612.05917 [3] Publisher https://arxiv.org/abs/1612.05917

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