Objective The primary aim of this project is to realise noiseless and ultra-low threshold optical components for improved optical information processing, transmission, display and storage, by exploiting the principles of quantum optics and electronics. The objectives can be broken down into two main categories:1) Compact and integrated/fibre noise-free optical amplifiers and optical taps, with performances beyond the usual shot noise limit.2) Light generators where the efficiency and noise will be optimised as far as allowed by the basic quantum limits. Special emphasis will be put on light emitting microcavity The concept underlying noise-free amplification, coupling and taping is optical parametric interaction, that allows to circumvent the classical 3 dB limit for the added noise. It will be implemented in miniature crystal resonators, wave guides and fibres, with a special emphasis on soliton pulses for the latter system. These devices can be utilised as light generators as well as amplifiers. Under such conditions they constitute sub-shot noise sources.Other controlled-noise sources will be obtained by cavity engineering of classical commercially available semiconductor lasers. Stripe and vertical cavity type lasers will be considered. Microcavities with various types of emissive materials, such as semiconductor quantum wells and dyes in polymers will be assessed. Thresholdless behaviour and high efficiency will be sought.The integrated/fibre devices for noiseless amplification and duplication aimed by this project constitute the building blocks of a noise-free optical bus. They will ultimately lead to the demonstration of a compact information-carrying channel that can be read out by several users without contamination by noise.The development of light emitters with an optical output stabilised to better than the shot noise limit of ordinary lasers will permit ultra-low intensity signal generation and processing. Microcavity based emitters will have enhanced directional emission and high efficiency.The Industrial Steering Committee, composed of representatives of several large companies involved in IT in Europe will act as a consulting board on the industrial consequences of the project. France-Telecom/CNET, Philips through its links with the University of Leiden and the members of the Industrial Steering Committee will have a priority in following up the results of the project by developing specific industrial products.The quantum nature of light sets a limit to the reliability of optical signal generation and processing if standard light sources and devices are used. An appropriate engineering of the quantum noise allows the minimisation of its effect on an information-carrying signal. Moreover, making full use of the quantum properties of light permits the design of novel optical devices. Fields of science natural scienceschemical sciencespolymer sciencesnatural sciencesphysical scienceselectromagnetism and electronicssemiconductivitynatural sciencesphysical sciencesquantum physicsquantum opticsnatural sciencescomputer and information sciencesdata sciencedata processingnatural sciencesphysical sciencesopticslaser physics Programme(s) FP4-ESPRIT 4 - Specific research and technological development programme in the field of information technologies, 1994-1998 Topic(s) 4.2 - Reactiveness to Industrial Needs Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Centre National de la Recherche Scientifique (CNRS) Address 16 rue pierre et marie curie 75005 Paris France See on map EU contribution € 0,00 Participants (7) Sort alphabetically Sort by EU Contribution Expand all Collapse all Centre National de la Recherche Scientifique France EU contribution € 0,00 Address Avenue de la terrasse 91198 Gif sur yvette See on map Defence Evaluation and Research Agency (DERA) GB EU contribution € 0,00 Address St andrews road WR14 3PS Malvern See on map France Telecom / Centre National D'etudes des Telecommunications France EU contribution € 0,00 Address Rue du general leclerc 38-40 91131 Issy-les- moulineaux See on map ITALIAN INSTITUTE FOR THE PHYSICS OF MATTER Italy EU contribution € 0,00 Address Viale c. berti pichat 6/ii 40127 Bologna See on map Rijksuniversiteit Leiden Netherlands EU contribution € 0,00 Address Niels bohrweg 2 2333CA Leiden See on map UNIVERSITY OF ERLANGEN-NUREMBERG Germany EU contribution € 0,00 Address Martensstrasse 7 91058 Erlangen See on map Universitat Konstanz Germany EU contribution € 0,00 Address Universitaetstrasse 10 78464 Konstanz See on map
