{"product_id":"9781627051842","title":"Negative Quantum Channels: An Introduction to Quantum Maps That Are Not Completely Positive","description":"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.\u003cp\u003eTable of Contents: Preface \/ Acknowledgments \/ Introduction and Definition of Terms \/ Tomography \/ Non-Positive Reduced Dynamics \/ Complete Positivity \/ Physical Motivation of Complete Positivity \/ Measures of Complete Positivity \/ Negative Channels \/ Negative Climates with Diagonal Composite Dynamics \/ Rabi Channels \/ Physical Motivations for Sharp Operations \/ Negative Qubit Channel Examples with Multi-Qubit Baths \/ Proposed Experimental Demonstration of Negativity \/ Implications of Negative Channels \/ Uses for Negative Channels \/ Conclusions \/ Bibliography \/ Author's Biography\u003c\/p\u003e","brand":"Morgan and Claypool Publishers","offers":[{"title":"Default Title","offer_id":47058968379632,"sku":"9781627051842","price":50.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781627051842_p0.jpg?v=1763866886","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781627051842","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}