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@article{1315249, author = {Dupont Dupuis, Frédéric}, article_location = {USA}, article_number = {2}, doi = {http://dx.doi.org/10.1063/1.4907981}, keywords = {quantum information; renyi entropy}, language = {eng}, issn = {0022-2488}, journal = {Journal of Mathematical Physics}, title = {Chain rules for quantum Renyi entropies}, volume = {56}, year = {2015} }
TY - JOUR ID - 1315249 AU - Dupont Dupuis, Frédéric PY - 2015 TI - Chain rules for quantum Renyi entropies JF - Journal of Mathematical Physics VL - 56 IS - 2 SP - 1-10 EP - 1-10 PB - American Institute of Physics SN - 00222488 KW - quantum information KW - renyi entropy N2 - We present chain rules for a new definition of the quantum Renyi conditional entropy sometimes called the "sandwiched" Renyi conditional entropy. More precisely, we prove analogues of the equation H(AB|C) = H(A|BC) + H(B|C), which holds as an identity for the von Neumann conditional entropy. In the case of the Rnyi entropy, this relation no longer holds as an equality but survives as an inequality of the form H-alpha(AB|C) > H-beta(A|BC) + H-gamma(B|C), where the parameters alpha, beta, gamma obey the relation alpha/alpha-1 = beta/beta-1 + gamma/gamma-1 and (alpha - 1)(beta - 1)(gamma - 1) > 1; if (alpha - 1)(beta - 1)(gamma - 1) < 1, the direction of the inequality is reversed. ER -
DUPONT DUPUIS, Frédéric. Chain rules for quantum Renyi entropies. \textit{Journal of Mathematical Physics}. USA: American Institute of Physics, 2015, roč.~56, č.~2, s.~1-10. ISSN~0022-2488. Dostupné z: https://dx.doi.org/10.1063/1.4907981.
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