Binayak S Choudhury
Indian Institute of Engineering Science and Technology, India
Title: Protocols for concentration of entanglement in multipartite quantum states
Biography
Biography: Binayak S Choudhury
Abstract
Quantum entanglement is considered as the most precious resource of Quantum Technology. Originally, the concept appeared in the famous EPR paper in 1935 in which entanglement between two parties was defined. It was only during the last decade of the twentieth century that the power of entanglement was discovered. In recent years, studies on entanglement attracted much attention due to its uses in the absolutely safe information transmission through Quantum Communication Protocols like Quantum Teleportation, Quantum Key Distribution, Quantum Secret Sharing, etc. Multipartite entanglement was considered and put to use at a later point of time. The quantification of entanglement had become necessary for which measures of entanglement have developed. In most of the cases, maximally entangled states are used, especially in Communication Protocols, although there are some reports of utilizing non-maximally entangled states as well. Thus, there is a need to increase the amount of entanglement, that is, to find the ways of creating more entanglement starting from a state which is initially less entangled. For this purpose Entanglement Concentration Protocols are proposed. Particularly, our discussion is on the protocols for entanglement concentration of multipartite quantum states, that is, quantum states which are shared by more than two parties.