# Nb impurity-bound excitons as quantum emitters in monolayer WS2

https://mdr.nims.go.jp/datasets/1414b237-1840-44da-b2fd-9e4325f57980

## File

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## Id

1414b237-1840-44da-b2fd-9e4325f57980

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-05T05:31:03.770927Z

## Updated at

2025-02-06T03:30:31.831486Z

## Published at

2025-02-06T03:30:31.938886Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-54360-5

## Date published

2024-11-20

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Nb impurity-bound excitons as quantum emitters in monolayer WS2
  title_type: original
  lang: en

## Description

- description: Point defects in crystalline solids behave as optically addressable
    individual quantum systems when present in sufficiently low concentrations. In
    two-dimensional semiconductors, such quantum defects hold potential as versatile
    single photon sources. Here, we report the synthesis and optical properties of
    impurity-doped monolayer WS2 in the dilute limit where the average spacing between
    individual dopants exceeds the optical diffraction limit. We show that these individual
    dopants exhibit common features of quantum emitters, including narrow emission
    lines (with linewidths <1 meV), strong spatial confinement, and photon antibunching.
    These emitters consistently occur within a narrow spectral range across multiple
    samples, distinct from common quantum emitters in van der Waals materials that
    show large ensemble broadening. Analysis of the Zeeman splitting reveals that
    they can be attributed to bound exciton complexes comprising dark excitons and
    negatively charged Nb.
  description_type: abstract
  lang: und

## Creator

- name: Leyi Loh
  role: author
  orcid: https://orcid.org/0000-0002-6315-7545
- name: Yi Wei Ho
  role: author
  orcid: https://orcid.org/0000-0002-5487-4948
- name: Fengyuan Xuan
  role: author
  orcid: https://orcid.org/0000-0002-0624-882X
- name: Andrés Granados del Águila
  role: author
- name: Yuan Chen
  role: author
  orcid: https://orcid.org/0009-0009-0835-3680
- name: See Yoong Wong
  role: author
- name: Jingda Zhang
  role: author
- name: Zhe Wang
  role: author
  orcid: https://orcid.org/0000-0001-6485-1523
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: Paul J. Pigram
  role: author
  orcid: https://orcid.org/0000-0002-7972-492X
- name: Michel Bosman
  role: author
- name: Su Ying Quek
  role: author
  orcid: https://orcid.org/0000-0003-4223-2953
- name: Maciej Koperski
  role: author
  orcid: https://orcid.org/0000-0002-8301-914X
- name: Goki Eda
  role: author
  orcid: https://orcid.org/0000-0002-1575-8020

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Point defects
  schema: not_defined
- subject: quantum systems
  schema: not_defined
- subject: single photon sources
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

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## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '15'
  issue: '1'
  article_number: '10035'

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## Fileset

- id: a0f9002b-fe2a-4ba9-892c-2dbf64970526
  filename: s41467-024-54360-5.pdf
  content_type: application/pdf
  size: 3465183
  md5: 7598aa5a91d275858cf5628e010d8f65

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