Magnetic Proximity Coupling of Quantum Emitters in WSe2 to van der Waals Ferromagnets
In: Nano Letters, Jg. 19 (2019-09-24), S. 7301-7308
Online
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Zugriff:
The realization of on-chip quantum networks requires tunable quantum states to encode information carriers on them. We show that Cr2Ge2Te6 (CGT) as a van der Waals ferromagnet can enable magnetic proximity coupling to site-controlled quantum emitters in WSe2, giving rise to ultrahigh exciton g factors up to 20 ± 1. By comparing the same site-controlled quantum emitter before and after ferromagnetic proximity coupling, we also demonstrate a technique to directly measure the resulting magnetic exchange field (MEF) strength. Experimentally determined values of MEF up to 1.2 ± 0.2 meV in the saturation regime approach the theoretical limit of 2.1 meV that was determined from density functional theory calculations of the CGT/WSe2 heterostructure. Our work extends the on-chip control of magneto-optical properties of excitons via van der Waals heterostructures to solid-state quantum emitters.
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Magnetic Proximity Coupling of Quantum Emitters in WSe2 to van der Waals Ferromagnets
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Autor/in / Beteiligte Person: | Shayan, Kamran ; Ma, Yichen ; Meunier, Vincent ; Strauf, Stefan ; Cupo, Andrew ; Luo, Yue ; Liu, Na |
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Zeitschrift: | Nano Letters, Jg. 19 (2019-09-24), S. 7301-7308 |
Veröffentlichung: | American Chemical Society (ACS), 2019 |
Medientyp: | unknown |
ISSN: | 1530-6992 (print) ; 1530-6984 (print) |
DOI: | 10.1021/acs.nanolett.9b02920 |
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