{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,8,4]],"date-time":"2023-08-04T07:55:21Z","timestamp":1691135721190},"reference-count":23,"publisher":"World Scientific Pub Co Pte Lt","issue":"01","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Open Syst. Inf. Dyn."],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:p> In the present paper we show a link between bistochastic quantum channels and classical maps. The primary goal of this work is to analyse the multiplicative structure of the Birkhoff polytope of order 3 (the simplest nontrivial case). A suitable complex parametrization of the Birkhoff polytope is proposed, which reveals several its symmetries and characteristics, in particular: (i) the structure of Markov semigroups inside the Birkhoff polytope, (ii) the relation between the set of Markov time evolutions, the set of positive definite matrices and the set of divisible matrices. A condition for Markov time evolution of semigroups in the set of symmetric bistochastic matrices is derived, which leads to an universal conserved quantity for all Markov evolutions. Finally, the complex parametrization is extended to the Birkhoff polytope of order 4. <\/jats:p>","DOI":"10.1142\/s1230161220500018","type":"journal-article","created":{"date-parts":[[2020,5,5]],"date-time":"2020-05-05T09:44:50Z","timestamp":1588671890000},"page":"2050001","source":"Crossref","is-referenced-by-count":1,"title":["Dynamical Semigroups in the Birkhoff Polytope of Order 3 as a Tool for Analysis of Quantum Channels"],"prefix":"10.1142","volume":"27","author":[{"given":"Mateusz","family":"Snamina","sequence":"first","affiliation":[{"name":"Kazimierz Gumiski Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, PL-30387 Krak\u00f3w, Poland"}]},{"given":"Emil J.","family":"Zak","sequence":"additional","affiliation":[{"name":"Chemistry Department, Queen\u2019s University, 90 Bader Lane, K7L 3N6 Kingston, ON, Canada"}]}],"member":"219","published-online":{"date-parts":[[2020,5,5]]},"reference":[{"key":"p_4","first-page":"147","volume":"5","author":"Birkhoff D.","year":"1946","journal-title":"Ser. 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