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Coherent spin manipulation of individual atoms on a surface

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Title
Coherent spin manipulation of individual atoms on a surface
Author(s)
Kai Yang; William Paul; Soo-Hyon Phark; Philip Willke; Yujeong Bae; Taeyoung Choi; Taner Esat; Arzhang Ardavan; Andreas J. Heinrich; Christopher P. Lutz
Publication Date
2019-10
Journal
SCIENCE, v.366, no.6464, pp.509 - 512
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Abstract
Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.Achieving time-domain control of quantum states with atomic-scale spatial resolution in nanostructures is a long-term goal in quantum nanoscience and spintronics. Here, we demonstrate coherent spin rotations of individual atoms on a surface at the nanosecond time scale, using an all-electric scheme in a scanning tunneling microscope (STM). By modulating the atomically confined magnetic interaction between the STM tip and surface atoms, we drive quantum Rabi oscillations between spin-up and spin-down states in as little as ~20 nanoseconds. Ramsey fringes and spin echo signals allow us to understand and improve quantum coherence. We further demonstrate coherent operations on engineered atomic dimers. The coherent control of spins arranged with atomic precision provides a solid-state platform for quantum-state engineering and simulation of many-body systems
URI
https://pr.ibs.re.kr/handle/8788114/6576
ISSN
0036-8075
Appears in Collections:
Center for Quantum Nanoscience(양자나노과학 연구단) > Journal Papers (저널 논문)
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