Objectif In quantum nanoelectronics, one of the paradigms is to use quantum mechanics in order to build more efficient nanoprocessors. In this context, the electron spin has been identified as a good degree of freedom to store and to manipulate quantum information efficiently. The defined building block of this quantum computer strategy is called a spin qubit. Towards this goal, intense experimental efforts have been invested in AlGaAs heterostructures where quantum dots with only one electron can be realized. In such a system, all the basic operations of a quantum nanoprocessor have been demonstrated in spin qubits and they constitute a very promising platform to study spin dynamics at the single electron level.To scale up the spin qubit system, one has to be able to make two distant qubits interacting. The protocol consists in the exchange of a quantum particle between the two qubits. In this respect, one can take advantage of the fact that a single electron can be transported within nanostructures. Understanding how to preserve quantum information stored in the spin of an electron while transferring it between two quantum dot systems is of crucial importance. Recently, the PI has realized a first important step towards this goal, namely the realization of efficient single electron transfer between two distant quantum dots on a timescale faster than the spin decoherence timeHere we propose to give a new dimension to the spin qubit system by investigating quantum coherence and manipulation of a single flying electron spin. Displacing coherently a single electron spin between two distant quantum dots not only represents a viable solution towards entanglement between distant qubits but also opens new ways of manipulating coherently electron spins via spin-orbit interaction. The new knowledge expected from these experiments is likely to have a broad impact extending from quantum spintronics to other areas of nanoelectronics. Champ scientifique natural sciencesphysical sciencesquantum physicsnatural sciencesphysical scienceselectromagnetism and electronicsspintronicsengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwarequantum computersengineering and technologynanotechnologynanoelectronics Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-SG-PE3 - ERC Starting Grant - Condensed matter physics Appel à propositions ERC-2012-StG_20111012 Voir d’autres projets de cet appel Régime de financement ERC-SG - ERC Starting Grant Institution d’accueil CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS Contribution de l’UE € 1 500 000,00 Adresse RUE MICHEL ANGE 3 75794 Paris France Voir sur la carte Région Ile-de-France Ile-de-France Paris Type d’activité Research Organisations Contact administratif Guillaume Rochet (Mr.) Chercheur principal Tristan Aurélien Yan Meunier (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS France Contribution de l’UE € 1 500 000,00 Adresse RUE MICHEL ANGE 3 75794 Paris Voir sur la carte Région Ile-de-France Ile-de-France Paris Type d’activité Research Organisations Contact administratif Guillaume Rochet (Mr.) Chercheur principal Tristan Aurélien Yan Meunier (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée