Regensburg 2022 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 21: Correlated Electrons: Poster Session
TT 21.22: Poster
Mittwoch, 7. September 2022, 15:00–18:00, P1
Electrical read out of the nuclear spin and implementation of quantum algorithms on Tb2Pc3 triple decker — •Luca Kosche1, Franck Balestro2, Mario Ruben3,4, 5, and Wolfgang Wernsdorfer1,2,3,4 — 1Physikalisches Institut, Karlsruhe Institute of Technology (KIT), Karlsruhe — 2CNRS, Institut Néel, Univ. Grenoble Alpes, France — 3Institute of Nanotechnology (INT), KIT — 4Institute for Quantum Materials and Technology (IQMT), KIT — 5Centre Européen de Sciences Quantiques (CESQ) , Strasbourg Cedex, France
Single-molecular magnets (SMMs) have emerged as an excellent link between the two disciplines of spintronics and molecular electronics. Their ultimate small size, excellent single spin characteristics, and long coherence times at low temperatures make them promising candidates for fundamental quantum operations. In this project we investigate spin-transistors comprising a SMM trapped in a nanometer sized gap coupled to a back gate thereby forming a quantum dot. The gap is achieved by electromigration of a gold constriction. Low-noise electrical transport measurements enable the read out of the four nuclear spin states of a single terbium ion in a TbPc2 double decker. First quantum algorithms, most importantly the Grover’s algorithm, have been implemented on this system. Recent measurements of more complex multi-state systems such as the Tb2Pc3 triple decker showed that the interactions between the two terbium nuclear spins can be detected. Here we pursue to use the increased Hilbert space dimension of coupled molecular spins for more complex quantum algorithms.