SKM 2023 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 15: Spins on Surfaces at the Atomic Scale II
O 15.6: Vortrag
Montag, 27. März 2023, 16:15–16:30, REC C 213
All-electrical driving and probing dressed states of a single spin on surface — •Hong Bui Thi1,2, Christoph Wolf1,3, Yu Wang1,3, Masahiro Haze1,4, Yi Chen1,3, Yujeong Bae1,2, Andreas Heinrich1,2, and Soo-Hyon Phark1,3 — 1Center for Quantum Nanoscience, Institute for Basic Science (IBS), Seoul 03760, Korea — 2Department of Physics, Ewha Womans University, Seoul 03760, Korea — 3Ewha Womans University, Seoul 03760, Korea — 4The Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
We demonstrate the creation of dressed states of a single electron spin localized on a surface by using a resonant radio-frequency field in a scanning tunneling microscope. Owing to the unique sub-nm probe-sample geometry field strengths as high as 1 GV/m can be achieved at a bias of the radio-frequency field below 100 mV. Magnetic resonance of a single spin in such a cavity is a direct consequence of coupling between the atomic dipole moment and driving electric field, resulting in the dressing of the atomic states. The read-out of these dressed states is facilitated in an all-electrical fashion by a weakly coupled probe spin. Our work highlights the strength of the atomic-scale geometry inherent to the scanning tunneling microscope in terms of the creation and control of dressed states, which are known to provide decoherence-free subspaces critical to the creation of long-lived quantum states.