Objective Photonic entanglement plays a crucial role both in fundamental tests of quantum mechanics and in quantum information processing (QIP). Remarkably, recent theoretical and experimental advances have shown the possibility to exploit multi-photon entanglement for efficient QIP using only linear optics together with projective measurement. Building on our long experience in research on entanglement from spontaneous parametric down-conversion, the main purpose of the present project is to perform a number of sign ificant experiments in the field of QIP with particular emphasis on linear optics quantum computation, long-distance quantum communication and new test of multi-party quantum locality. Within the project, we plan to experimentally investigate the potential application of a photonic logic gate with classical feed-forwardability; we plan to exploit free-space entanglement distribution to perform experimental demonstration of long-distance quantum teleportation and quantum cryptography on the order of ten kilo metre to penetrate the limit of aerosphere; we plan both to exploit multi-qubit code to experimentally investigate the possibility to overcome the decoherence caused by the channel noise and, to exploit entanglement swapping to investigate the possibility to solve the photon loss in the quantum channel; moreover, we also plan to perform a demonstration of high efficiency quantum cryptography with high-dimensional entanglement; and finally we plan to exploit a high-intensity three-photon entanglement source to perform long-distance third-man cryptography, secret sharing and test of quantum nonlocality. The techniques that will be developed in the above experiments will lay the basis for future large scale realizations of linear optical QIP. Fields of science natural sciencesphysical sciencesquantum physicsnatural sciencescomputer and information sciencescomputer securitycryptographyengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwarequantum computersnatural sciencesphysical sciencesopticsnatural sciencesphysical sciencestheoretical physicsparticle physicsphotons Programme(s) FP6-MOBILITY - Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006 Topic(s) MOBILITY-3.1 - Marie Curie Excellence Grants (EXT) Call for proposal FP6-2002-MOBILITY-8 See other projects for this call Funding Scheme EXT - Marie Curie actions-Grants for Excellent Teams Coordinator RUPRECHT-KARLS-UNIVERSITÄT HEIDELBERG EU contribution No data Address Seminarstrasse 2 HEIDELBERG Germany See on map Links Website Opens in new window Total cost No data
