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arXiv · 2209.06806

Quantum Stabilizer Channel for Thermalization

Esteban Martínez-Vargas
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Abstract

We study the problem of quantum thermalization from a very recent perspective: via discrete interactions with thermalized systems. We thus extend the previously introduced scattering thermalization program by studying not only a specific channel but allowing any possible one. We find a channel that solves a fixed point condition using the Choi matrix approach that is in general non-trace-preserving. We also find a general way to complement the found channel so that it becomes trace-preserving. Therefore we find a general way of characterizing a family of channels with the same desired fixed point. From a quantum computing perspective, the results thus obtained can be interpreted as a condition for quantum error correction that also reminds of quantum error avoiding.

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Esteban Martínez-Vargas. 2022-09-14. Quantum Stabilizer Channel for Thermalization. https://arxiv.org/abs/2209.06806

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