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arXiv · 1711.07906

Stabilizing quantum dynamics through coupling to a quantized environment

Meenu Kumari·Eduardo Martin-Martinez·Achim Kempf·Shohini Ghose
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Abstract

We show that introducing a small uncertainty in the parameters of quantum systems can make the dynamics of these systems robust against perturbations. Concretely, for the case where a system is subject to perturbations due to an environment, we derive a lower bound on the fidelity decay, which increases with increasing uncertainty in the state of the environment. Remarkably, this robustness in fidelity can be achieved even in fragile chaotic systems. We show that non-Markovianity is necessary for attaining robustness in the fidelity.

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Meenu Kumari, Eduardo Martin-Martinez, Achim Kempf, Shohini Ghose. 2017-11-21. Stabilizing quantum dynamics through coupling to a quantized environment. https://arxiv.org/abs/1711.07906

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