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arXiv 2402.12944quant-ph
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完全正映射的Choi表示简述

Choi representation of completely positive maps in brief

G. Homa, A. Ortega, M. Koniorczyk

AI总结:

本文简要介绍量子信道(完全正映射)的Choi表示(即Choi-Jamiołkowski同构),重点阐述其计算技术,便于参数化与优化。

摘要:

完全正(CP)映射(即量子信道)的Choi表示在量子信息和量子计算中经常使用,因为它易于处理。它是CP映射与量子态之间的对应关系,也称为Choi-Jamiołkowski同构。当需要对CP映射集合进行参数化以考虑一般映射或在该集合上进行优化时,它尤其有用。在此,我们对该主题进行简要介绍,重点介绍某些有用的计算技术,并给出完整细节。

英文摘要:

The Choi representation of completely positive (CP) maps, i.e. quantum channels is often used in the context of quantum information and computation as it is easy to work with. It is a correspondence between CP maps and quantum states also termed as the Choi-Jamiołkowski isomorphism. It is especially useful if a parametrization of the set of CP maps is needed in order to consider a general map or optimize over the set of these. Here we provide a brief introduction to this topic, focusing on certain useful calculational techniques which are presented in full detail.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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