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Negative Quantum Channels An Introduction to Quantum Maps that are Not Completely Positive

English | PDF(True) | 2014 | 189 Pages | ISBN : 1627051848 | 2.3 MB


 

This book is a brief introduction to negative quantum channels, i.e., linear, trace-preserving (and consistent) quantum maps that are not completely positive. The flat and sharp operators are introduced and explained. Complete positivity is presented as a mathematical property, but it is argued that complete positivity is not a physical requirement of all quantum operations. Negativity, a measure of the lack of complete positivity, is proposed as a tool for empirically testing complete positivity assumptions.

 

Negative Quantum Channels An Introduction to Quantum Maps that are Not Completely Positive

 

 


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