Quantum communication via partially entangle states

• Grant number: 11/13153-4
• Support Opportunities: Regular Research Grants
• Start date: December 01, 2011
• End date: November 30, 2013
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Gustavo Garcia Rigolin
• Grantee: Gustavo Garcia Rigolin
• Host 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)