Objective The key elements required for quantum information processing are:- Low error encoding of qubits onto individual quantum systems- Storage of quantum information for times long compared to gate times- Controllable two qubit interactions forming fast quantum gates.Our candidate systems are the paramagnetic colour centres in diamond. They offer at individual spin control and at room temperature very long coherence times compared to quantum gate processing times. The primary objective of this project is to use such defects in nanostructured diamond to implement scalable quantum logic gates, with the prospect of room temperature operation. Such elements rely on electron spin splitting of ground states in specific colour centres in diamond. Read-out of the single electron spin state can be achieved through optical detection of the colour centre strong photoluminescence, which is perfectly photostable even at room temperature.An order-of-magnitude improvement of the detection efficiency is therefore of crucial importance for achieving single shot read-out of the state of the addressed spin, and is one of the main objectives of the project. Coherent single photon wavepackets are also one of the building blocks for a photon-based quantum processor. Since individual colour centres in diamond have been shown as promising single photon source, temporal coherence of the emitted single photons will be investigated.The project involves 8 groups, all leading experts in the field of diamond material processing and application of diamond to quantum information. It strongly relies on recent developments in the synthesis and processing of high purity isotopically engineered intrinsic and doped single crystal diamond, the production and functionalization of diamond nanocrystals, and methods of controlled activation of defect centres suitable for quantum computing. Such developments will also benefit to diamond colour centre based single photon sources for quantum cryptography. Fields of science engineering and technologymaterials engineeringcolorsnatural sciencesphysical sciencesquantum physicsnatural sciencescomputer and information sciencescomputer securitycryptographyengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwarequantum computersnatural sciencesphysical sciencestheoretical physicsparticle physicsphotons Keywords Nanotechnology Programme(s) FP6-IST - Information Society Technologies: thematic priority under the specific programme "Integrating and strengthening the European research area" (2002-2006). Topic(s) 2.3.4.1 b9 - 2.3.4.1.b9 FET open Call for proposal Data not available Funding Scheme STREP - Specific Targeted Research Project Coordinator ECOLE NORMALE SUPERIEURE DE CACHAN Address Avenue du president wilson 61 94235 Cachan France See on map EU contribution € 0,00 Participants (7) Sort alphabetically Sort by EU Contribution Expand all Collapse all BI STEPANOV INSTITUTE OF PHYSICS OF Belarus EU contribution € 0,00 Address Nezavisimosti ave 68 220072 Minsk See on map CHRISTIAN-ALBRECHTS-UNIVERSITAET ZU KIEL Germany EU contribution € 0,00 Address Olshausenstrasse 40 Kiel See on map ELEMENT SIX LIMITED United Kingdom EU contribution € 0,00 Address Kings ride park SL5 8BP Ascot See on map THE UNIVERSITY OF MELBOURNE Australia EU contribution € 0,00 Address Parkville office of the vice chancellor 3010 Melbourne See on map THE UNIVERSITY OF WARWICK United Kingdom EU contribution € 0,00 Address University house, kirby corner road CV4 8UW Coventry See on map UNIVERSITAET STUTTGART EU contribution € 0,00 Address See on map Links Website Opens in new window UNIVERSITY OF BRISTOL United Kingdom EU contribution € 0,00 Address Senate house, tyndall avenue Bristol See on map Links Website Opens in new window
