Observation and Control of Spontaneous Magnon Emission from Spin Ensembles in 2D Hexagonal Boron Nitride
Abstract
Hybrid systems consisting of color centers and magnetic materials provide an appealing solid-state platform for advancing the burgeoning quantum technological revolution. Exploring novel coupling mechanisms between optically active spin defects and quantum degrees of freedom is directly relevant in this context. Here, we report observation and control of spontaneous magnon emission from boron-vacancy centers in 2D hexagonal boron nitride (hBN) to a proximal ferrimagnet in the near-zero temperature limit. The spontaneous magnon emission process is overshadowed by thermal magnon effect as temperature increases, reflecting the crossover from a spontaneous-emission-dominated magnon reservoir to a thermally occupied spin bath where absorption and stimulated processes restore balance. By increasing the spin defect density, we further present that spontaneous magnon emission into a common spin bath could help establish magnon-mediated correlations in dense hBN spin ensembles. Our results are quantitatively captured by theoretical modeling, bringing insights into understanding qubit-magnon coupling, correlated spin dynamics, and many-body physics of color centers in the quantum regime.
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BibTeX
@misc{zhou2026observation,
title = {{Observation and Control of Spontaneous Magnon Emission from Spin Ensembles in 2D Hexagonal Boron Nitride}},
author = {Ling-Jie Zhou and Jayakrishnan M. P. Nair and Senlei Li and Thomas Poirier and Yiran Zhao and Zelong Xiong and Sumedh Rathi and Jingcheng Zhou and Zhigang Jiang and Hailong Wang and James H. Edgar and Benedetta Flebus and Chunhui Rita Du},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.20996},
eprint = {2606.20996},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.20996},
}
RIS
TY - UNPB
TI - Observation and Control of Spontaneous Magnon Emission from Spin Ensembles in 2D Hexagonal Boron Nitride
AU - Ling-Jie Zhou
AU - Jayakrishnan M. P. Nair
AU - Senlei Li
AU - Thomas Poirier
AU - Yiran Zhao
AU - Zelong Xiong
AU - Sumedh Rathi
AU - Jingcheng Zhou
AU - Zhigang Jiang
AU - Hailong Wang
AU - James H. Edgar
AU - Benedetta Flebus
AU - Chunhui Rita Du
PY - 2026
DA - 2026/10/20
PB - arXiv
DO - 10.48550/arxiv.2606.20996
UR - https://arxiv.org/abs/2606.20996
AB - Hybrid systems consisting of color centers and magnetic materials provide an appealing solid-state platform for advancing the burgeoning quantum technological revolution. Exploring novel coupling mechanisms between optically active spin defects and quantum degrees of freedom is directly relevant in this context. Here, we report observation and control of spontaneous magnon emission from boron-vacancy centers in 2D hexagonal boron nitride (hBN) to a proximal ferrimagnet in the near-zero temperature limit. The spontaneous magnon emission process is overshadowed by thermal magnon effect as temperature increases, reflecting the crossover from a spontaneous-emission-dominated magnon reservoir to a thermally occupied spin bath where absorption and stimulated processes restore balance. By increasing the spin defect density, we further present that spontaneous magnon emission into a common spin bath could help establish magnon-mediated correlations in dense hBN spin ensembles. Our results are quantitatively captured by theoretical modeling, bringing insights into understanding qubit-magnon coupling, correlated spin dynamics, and many-body physics of color centers in the quantum regime.
ER -