Objectif The latest concepts for quantum computing and data storage envision the use of single spins, which can be addressed and manipulated reliably. One of the main limitations towards this challenging goal is the ultra-short lifetime of excited spin states due to the interaction with the contacting leads. Another limitation is that coherence between individual spins is quickly lost. Already the measurement process for resolving coherent electron-spin interactions at the single atom level is highly challenging and has not been achieved so far.Within our proposal, we will construct a low-temperature scanning tunneling microscope with a radio-frequency current detection system and a microwave source close to the tip. With this unique machine, we will be able to carry out state-of-the-art STM experiments combined with atomic-scale precision of measuring electron-spin resonance signals. With the approach of measuring in the frequency domain, we increase our energy resolution beyond the thermal energy level broadening into the µeV range and can thus investigate magnetic coupling, hyperfine interactions and spin coherence properties, which are not accessible in conventional STM experiments. We will also be able to probe the timescales of spin-lattice and spin-spin relaxations by pump-probe excitation schemes.We will use this machine for resolving magnetic properties of single atoms and atomic-size nanostructures on superconducting substrates. These substrates exhibit two peculiarities, which are of crucial importance for quantum information processing. The spin lifetimes are orders of magnitudes larger than on normal metal surfaces. Furthermore, the long coherence length of Cooper pairs mediates coherent coupling of the spin states of paramagnetic atoms. We will manipulate the spin states by the intrinsic Josephson current as well as with external microwave radiation. Our model systems on superconductors will provide crucial steps towards quantum spin processing. Champ scientifique engineering and technologyelectrical engineering, electronic engineering, information engineeringinformation engineeringtelecommunicationsradio technologyradio frequencyengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwarequantum computersnatural sciencesphysical sciencesopticsmicroscopyscanning tunneling microscopynatural sciencesphysical scienceselectromagnetism and electronicssuperconductivity 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-CG-2013-PE3 - ERC Consolidator Grant - Condensed Matter Physics Appel à propositions ERC-2013-CoG Voir d’autres projets de cet appel Régime de financement ERC-CG - ERC Consolidator Grants Institution d’accueil FREIE UNIVERSITAET BERLIN Contribution de l’UE € 1 999 468,80 Adresse KAISERSWERTHER STRASSE 16-18 14195 Berlin Allemagne Voir sur la carte Région Berlin Berlin Berlin Type d’activité Higher or Secondary Education Establishments Contact administratif Larissa Türk (Ms.) Chercheur principal Katharina Jennifer Franke (Prof.) 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 FREIE UNIVERSITAET BERLIN Allemagne Contribution de l’UE € 1 999 468,80 Adresse KAISERSWERTHER STRASSE 16-18 14195 Berlin Voir sur la carte Région Berlin Berlin Berlin Type d’activité Higher or Secondary Education Establishments Contact administratif Larissa Türk (Ms.) Chercheur principal Katharina Jennifer Franke (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
