@Article{Shor2009, author="Shor, Peter W.", title="Quantum information theory: The bits don{\textquoteright}t add up", journal="Nature Physics", year="2009", volume="5", pages="247--248", optkeywords="fromIPMRAS", abstract="A counterexample to the {\textquoteright}additivity question{\textquoteright}, the most celebrated open problem in the mathematical theory of quantum information, casts doubt on the possibility of finding a simple expression for the information capacity of a quantum channel.", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=800), last updated on Wed, 09 May 2012 11:45:26 -0500" }