Quantum Communication Network

<strong>Seminar of the School of Physical Sciences ------------------------------------------------</strong> <strong>Title: Quantum Communication Network</strong> Speaker:&nbsp;<strong>R. Prabhu</strong> (Harish-Chandra Research Institute, Allahabad) Date:&nbsp;<strong>January 21, 2015</strong> <strong>Abstract:&nbsp;</strong>The discoveries of the quantum communication strategies, beginning with the protocols of quantum dense coding, quantum teleportation, and quantum key distribution, have revolutionized the way we think about modern communication schemes. The importance of such protocols lies in the fact that they can efficiently transmit classical or quantum information in a way that is better than what is possible by using classical protocols. In this talk, I will introduce the restrictions present in sending classical information between several senders and several receivers through the quantum channels. I will also establish a complementarity relation between the capacity of quantum communication scheme and multipartite quantum correlation measure where multiparty quantum states act as quantum channels. I will connect the multipartite quantum correlations and the capacity of sending classical information through spin models as quantum channels.