Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session W52: Photonic and Solid State Quantum Sensors
3:00 PM–6:00 PM,
Thursday, March 7, 2024
Room: 201AB
Sponsoring
Unit:
DQI
Chair: Anthony Brady, University of Arizona
Abstract: W52.00014 : Off-resonant imaging of magnon propagation using NV quantum sensors
5:36 PM–5:48 PM
Presenter:
Johannes Cremer
(University of Maryland, Harvard University)
Authors:
Johannes Cremer
(University of Maryland, Harvard University)
Daniel Fernandez
(Harvard University)
Shantam M Ravan
(University of Maryland, College Park / Harvard University)
Ziwei Qiu
(Harvard University)
Ilya Esterlis
(University of Wisconsin - Madison)
Eugene Demler
(ETH Zürich)
Ronald L Walsworth
(University of Maryland, College Park)
Amir Yacoby
(Harvard University)
and the ability to manipulate upcoming magnetic memories directly [1]. Quantum sensors - especially nitrogen vacancy (NV) centers in diamond - have been successfully
employed to sense and image magnons, enabling detailed studies of magnons and their coupling to other materials [2] [3]. Usually however a magnetic bias field needs to be
tuned to bring the magnons in resonance with the NV center spin transition. This is not always desirable, as an applied bias field changes the behavior of the magnons as
well as that of potential interaction targets. Here we present a protocol that allows for off-resonant sensing of magnons with NVs based on the AC-stark effect. We demonstrate
that we can use NVs to image magnon propagation at magnetic bias fields not constrained to resonance conditions.
[1] Y. Wang et al, Science, 366(6469):1125–1128 (2019). doi: 10.1126/science.aav8076
[2] T. X. Zhou et al, Proc. Natl. Acad. Sci. U.S.A., 118(25) (2021). doi:10.1073/pnas.2019473118
[3] I. Bertelli et al, Adv Quantum Tech, 4(12) (2021). doi: 10.1002/qute.202100094
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