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Topological Quantum Computing Open Quantum Systems Decoherence Quantum Simulation

From Dicke to Anderson: Interplay of Superradiance and Disorder

arXiv

Authors: Alberto Biella

Year

2014

Paper ID

8135

Status

Preprint

Abstract Read

~2 min

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Abstract

Using a non-Hermitian Hamiltonian approach to open systems, we study the interplay of disorder and superradiance in a one- and three-dimensional Anderson model. Analyzing the complex eigenvalues of the non-Hermitian Hamiltonian, a transition to a superradiant regime is shown to occur. As an effect of openness the structure of eigenstates undergoes a strong change in the superradiant regime: we show that the sensitivity to disorder of the superradiant and the subradiant subspaces is very different; superradiant states remain delocalized as disorder increases, while subradiant states are sensitive to the degree of disorder.

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Using a non-Hermitian Hamiltonian approach to open systems, we study the interplay of disorder and superradiance in a one- and three-dimensional Anderson model.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1407.6562 [2] arXiv https://arxiv.org/abs/1407.6562 [3] Publisher https://arxiv.org/abs/1407.6562

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