Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session D55: Low Dimensional Magnetism (Including Molecules and Surfaces)
3:00 PM–5:48 PM,
Monday, March 6, 2023
Room: Room 305
Sponsoring
Unit:
GMAG
Chair: Masaaki Matsuda, Oak Ridge National Lab
Abstract: D55.00011 : Lanthanide atoms on MgO(100)/Ag(100) as Candidate for Single-Atom-Qubits
5:24 PM–5:36 PM
Presenter:
Stefano Reale
(Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea)
Authors:
Stefano Reale
(Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea)
Aparajita Singha
(Max Planck Institute for Solid State Research, Stuttgart, Germany)
Safa L Ahmed
(Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea)
Denis Krylov
(Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea)
Luciano Colazzo
(Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea)
Christoph Wolf
(EWHA Woman's Univ)
Carlo S Casari
(Department of Energy, Politecnico di Milano, Milano 20133, Italy)
Alessandro Barla
(Istituto di Struttura della Materia (ISM), Consiglio Nazionale delle Ricerche (CNR), I-34149 Trieste, Italy)
Edgar Fernandes
(Institute of Physics, Ecole Polytechnique Fe´de´rale de Lausanne, 1015 Lausanne, Switzerland)
Francois Patthey
(Institute of Physics, Ecole Polytechnique Fe´de´rale de Lausanne, 1015 Lausanne, Switzerland)
Marina Pivetta
(Institute of Physics, Ecole Polytechnique Fe´de´rale de Lausanne, 1015 Lausanne, Switzerland)
Stefano Rusponi
(Institute of Physics, Ecole Polytechnique Fe´de´rale de Lausanne, 1015 Lausanne, Switzerland)
Harald Brune
(Ecole Polytechnique Federale de Lausanne)
Fabio Donati
(Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea)
Here we propose a combined experimental and theoretical method to estimate the performance of surface-adsorbed lanthanide atoms for quantum coherent operations. We investigate Er and Tm on on MgO(100)/Ag(100) with x-ray absorption spectroscopy to address their magnetic and electronic properties and with scanning tunneling microscopy (STM) to identify their adsorption sites. With atomic multiplet calculations and density functional theory, we infer for both atoms a magnetic ground state that is suitable for quantum coherent operations.
We investigate whether these systems lend themselves to ESR-STM. By adapting the piezoelectric model of ESR-STM [Science Advances 6, eabc5511 (2020)] to the case of lanthanide atoms, we show that these systems should exhibit a detectable signal and that they have a higher Rabi rate compared to the systems studied up to date [S. Reale et al., submitted (2022)]. In addition to their suitable electron spin properties, these elements possess a non-trivial nuclear spin which can be exploited to perform two-qubit operations on a single atom or to store quantum states in the nuclear spin.
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