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Entanglement in Quantum Information Processing and Communication

Objective

We propose a research consortium on the theoretical foundations of quantum information processing and communication (QIPC). The focus will be on quantum mechanical entanglement, which is the key-resource for QIPC. The main objective is to advance the theory of bi-partite entanglement and to develop a theory of multi-partite entanglement which would ultimately provide the basis for the future technological application of quantum mechanics in information processing and communication. Information theoretic chracterisation of entaglement will be developed, and its physical implementation in communication and computation will be established. Results are expected on optimal coding/decoding in quantum channel communication, suppression of decoherence in quantum cmputation and communication, and on scalable quantum computer and communication line repeater.

OBJECTIVES
To provide the basis for the application of entanglement and other quantum mechanical elements in the future technologies of information processing and communication:
- To indentify useful types of entangelement and to develop models for their physical implementation;
- To quantify the add-on value of entaglement and to optimise the quantum-classical interface;
- To develop robust schemes of entanglement manipulation for longer distance and secure quantum communication;
- To explore advanced quantmm mechanical effects for the development of an elementary scalable quantum computer.

DESCRIPTION OF WORK
The project comprises theoretical investigations on the add-on value of entanglement and its optimal use for the tasks of quantum information processing und communication. The objectives are addressed in two interrelated research-areas "characterization" and "implementation". Research-area "characterization" aims to build a theoretical framework for the characterization of quantum mechanical entanglement in the context of information sciences.

Research will be pursued along the following action lines:
1.1 indentify properties of entanglement which are useful in QIPC;
1.2 quantify the add-on value of entanglement in QIPC;
1.3 clarify the relation of QIPC to thermodynamics and classical information theory.

Research-area "implementation" adresses the physical implementation of entanglement-based QIPC. Research will be conducted along the following action lines:
2.1 utilize advanced physical effects for the production and manipulation of entanglement;
2.2 seek physical means to stabilize and to protect entanglement against decoherence;
2.3 optimise the quantum-classical interface and channel capacity Research will be pursued in a highly connected, interdisciplinary and transnational European network of 17 participating organizations including universities, public research centres and industry. Work will be conducted in close collaboration with other projects in the IST/FET-P1.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

UNIVERSITAET POTSDAM
Address
Am Neuen Palais 10
14469 Potsdam
Germany

Participants (16)

AARHUS UNIVERSITET
Denmark
Address
Nordre Ringgade 1
8000 Aarhus
HELSINKI INSTITUTE OF PHYSICS
Finland
Address
Yliopistonkatu 14
96101 Helsinki
HEWLETT-PACKARD LIMITED
United Kingdom
Address
Cain Road
RG12 1HN Bracknell
IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE
United Kingdom
Address
South Kensington Campus
SW7 2AZ London
ISTITUTO NAZIONALE PER LA FISICA DELLA MATERIA
Italy
Address
Corso F. Perrone 24
16152 Genova
MAX PLANCK GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V.
Germany
Address
Hofgartenstrasse 8
80539 Muenchen
SLOVAK ACADEMY OF SCIENCES - INSTITUTE OF PHYSICS
Slovakia
Address
Dubravska Cesta 9
842 28 Bratislava
TECHNISCHE UNIVERSITAET BRAUNSCHWEIG
Germany
Address
Pockelstrasse 14
38106 Braunschweig
THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD
United Kingdom
Address
University Offices, Wellington Square
OX1 2JD Oxford
UNIVERSITA DEGLI STUDI DI PAVIA
Italy
Address
Strada Nuova 65
27100 Pavia
UNIVERSITAD DE BARCELONA
Spain
Address
Gran Via Corts Catalanes 585
08007 Barcelona
UNIVERSITAET HANNOVER
Germany
Address
Welfengarten 1
30167 Hannover
UNIVERSITE DE GENEVE
Switzerland
Address
Rue Du General Dufour 24
1211 Geneve 4
UNIVERSITE LIBRE DE BRUXELLES
Belgium
Address
Avenue Franklin Roosevelt 50
1050 Bruxelles
UNIVERSITY OF BRISTOL
United Kingdom
Address
Senate House, Tyndall Avenue
BS8 1TH Bristol
UNIWERSYTET GDANSKI
Poland
Address
Ul. Bazynskiego 1A
80-952 Gdansk