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Quantum communication via partially entangle states

Grant number: 11/13153-4
Support type:Regular Research Grants
Duration: December 01, 2011 - November 30, 2013
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Gustavo Garcia Rigolin
Grantee:Gustavo Garcia Rigolin
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

In this project we intend to study the feasibility of using partially entangled statesto perform informational tasks hitherto only possible with maximally entangled states. We divide our efforts on two major fronts. The firstone concerns partially entangled quantum systems of finite dimension. That is, we deal here with qubits. In particular, we want to find ways to accomplish successive teleportation (chain teleportation) efficiently using non-perfectly entangled Bell states. The other front of research will focus on teleportationof infinite dimensional quantum systems, usually known as continuous variable systems. Specifically, we want to study what changes in the original protocol of teleportation can result in an increase of its efficiency. (AU)