Imaginarity of quantum channels: Refinement and Alternative
arXiv:2405.06222 · doi:10.1016/j.physleta.2024.130129
Abstract
In this paper, we introduce the framework for quantifying the imaginarity of quantum channels. Besides, an alternative framework is given together to simplify the process of verifying the condition. We present three imaginarity measures of quantum channels based on the robustness, the trace norm, and the entropy, respectively. Some properties are also given.
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