id: 06031193 dt: a an: 06031193 au: Chruściński, Dariusz; Hirota, Yuji; Matsuoka, Takashi; Ohya, Masanori ti: Remarks on the degree of entanglement. so: Accardi, Luigi (ed.) et al., Quantum bio-informatics IV. From quantum information to bio-informatics, Tokyo, Japan, March 10‒13, 2010. Selected papers based on the presentations at the international conference. Hackensack, NJ: World Scientific (ISBN 978-981-4343-75-6/hbk; 978-981-4343-76-3/ebook). QP-PQ: Quantum Probability and White Noise Analysis 28, 145-156 (2011). py: 2011 pu: Hackensack, NJ: World Scientific la: EN cc: ut: quantum entanglement; quantum entropy ci: li: http://ebooks.worldscinet.com/ISBN/9789814343763/9789814343763_0012.html ab: Summary: We analyze a measure of quantum entanglement called degree of entanglement(DEN). It is shown how DEN behaves for well known classes of bipartite states. Moreover, we compare DEN for quantum states having the same marginals. Contrary to naive expectation it is shown that separable state might possesses stronger correlation (measured by DEN) than an entangled state. rv: