Yang, L., Yuan, Y., Fu, B., Yang, J., Dai, D., Shi, S., Yan, S., Zhu, R., Han, X., Li, H., Zuo, Z., Wang, C., Huang, Y., Jin, K., Gong, Q., & Xu, X. (2023). Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities. Nature Communications, 14(1), Article 4265. https://doi.org/10.1038/s41467-023-39972-7
Yang, Longlong ; Yuan, Yu ; Fu, Bowen et al. / Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities. In: Nature Communications. 2023 ; Vol. 14, No. 1.
@article{264053c206734c48affdfa7d7924bf34,
title = "Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities",
abstract = "Single photon emission of quantum emitters (QEs) carrying internal degrees of freedom such as spin and angular momentum plays an important role in quantum optics. Recently, QEs in two-dimensional semiconductors have attracted great interest as promising quantum light sources. However, whether those QEs are characterized by the same valley physics as delocalized valley excitons is still under debate. Moreover, the potential applications of such QEs still need to be explored. Here we show experimental evidence of valley symmetry breaking for neutral QEs in WSe2 monolayer by interacting with chiral plasmonic nanocavities. The anomalous magneto-optical behaviour of the coupled QEs suggests that the polarization state of emitted photon is modulated by the chiral nanocavity instead of the valley-dependent optical selection rules. Calculations of cavity quantum electrodynamics further show the absence of intrinsic valley polarization. The cavity-dependent circularly polarized single-photon output also offers a strategy for future applications in chiral quantum optics.",
author = "Longlong Yang and Yu Yuan and Bowen Fu and Jingnan Yang and Danjie Dai and Shushu Shi and Sai Yan and Rui Zhu and Xu Han and Hancong Li and Zhanchun Zuo and Can Wang and Yuan Huang and Kuijuan Jin and Qihuang Gong and Xiulai Xu",
note = "Publisher Copyright: {\textcopyright} 2023, The Author(s).",
year = "2023",
month = dec,
doi = "10.1038/s41467-023-39972-7",
language = "English",
volume = "14",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",
}
Yang, L, Yuan, Y, Fu, B, Yang, J, Dai, D, Shi, S, Yan, S, Zhu, R, Han, X, Li, H, Zuo, Z, Wang, C, Huang, Y, Jin, K, Gong, Q & Xu, X 2023, 'Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities', Nature Communications, vol. 14, no. 1, 4265. https://doi.org/10.1038/s41467-023-39972-7
Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities. / Yang, Longlong; Yuan, Yu; Fu, Bowen et al.
In:
Nature Communications, Vol. 14, No. 1, 4265, 12.2023.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities
AU - Yang, Longlong
AU - Yuan, Yu
AU - Fu, Bowen
AU - Yang, Jingnan
AU - Dai, Danjie
AU - Shi, Shushu
AU - Yan, Sai
AU - Zhu, Rui
AU - Han, Xu
AU - Li, Hancong
AU - Zuo, Zhanchun
AU - Wang, Can
AU - Huang, Yuan
AU - Jin, Kuijuan
AU - Gong, Qihuang
AU - Xu, Xiulai
N1 - Publisher Copyright:
© 2023, The Author(s).
PY - 2023/12
Y1 - 2023/12
N2 - Single photon emission of quantum emitters (QEs) carrying internal degrees of freedom such as spin and angular momentum plays an important role in quantum optics. Recently, QEs in two-dimensional semiconductors have attracted great interest as promising quantum light sources. However, whether those QEs are characterized by the same valley physics as delocalized valley excitons is still under debate. Moreover, the potential applications of such QEs still need to be explored. Here we show experimental evidence of valley symmetry breaking for neutral QEs in WSe2 monolayer by interacting with chiral plasmonic nanocavities. The anomalous magneto-optical behaviour of the coupled QEs suggests that the polarization state of emitted photon is modulated by the chiral nanocavity instead of the valley-dependent optical selection rules. Calculations of cavity quantum electrodynamics further show the absence of intrinsic valley polarization. The cavity-dependent circularly polarized single-photon output also offers a strategy for future applications in chiral quantum optics.
AB - Single photon emission of quantum emitters (QEs) carrying internal degrees of freedom such as spin and angular momentum plays an important role in quantum optics. Recently, QEs in two-dimensional semiconductors have attracted great interest as promising quantum light sources. However, whether those QEs are characterized by the same valley physics as delocalized valley excitons is still under debate. Moreover, the potential applications of such QEs still need to be explored. Here we show experimental evidence of valley symmetry breaking for neutral QEs in WSe2 monolayer by interacting with chiral plasmonic nanocavities. The anomalous magneto-optical behaviour of the coupled QEs suggests that the polarization state of emitted photon is modulated by the chiral nanocavity instead of the valley-dependent optical selection rules. Calculations of cavity quantum electrodynamics further show the absence of intrinsic valley polarization. The cavity-dependent circularly polarized single-photon output also offers a strategy for future applications in chiral quantum optics.
UR - http://www.scopus.com/inward/record.url?scp=85165150103&partnerID=8YFLogxK
U2 - 10.1038/s41467-023-39972-7
DO - 10.1038/s41467-023-39972-7
M3 - Article
C2 - 37460549
AN - SCOPUS:85165150103
SN - 2041-1723
VL - 14
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 4265
ER -
Yang L, Yuan Y, Fu B, Yang J, Dai D, Shi S et al. Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities. Nature Communications. 2023 Dec;14(1):4265. doi: 10.1038/s41467-023-39972-7
