# Chiral flat-band optical cavity with atomically thin mirrors

https://mdr.nims.go.jp/datasets/611122e9-be81-4ba4-83da-731bdf03e074

## File

- [sciadv.adr5904.pdf](https://mdr.nims.go.jp/filesets/de4bf23f-ea4e-48d6-a9b4-0262ceeddc63/download) ([Detail](https://mdr.nims.go.jp/filesets/de4bf23f-ea4e-48d6-a9b4-0262ceeddc63.md))

## Id

611122e9-be81-4ba4-83da-731bdf03e074

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-04T08:27:06.665693Z

## Updated at

2025-02-05T03:31:14.798203Z

## Published at

2025-02-05T03:31:14.867950Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.adr5904

## Date published

2024-12-20

## Recorded date published

2024-12-20

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Chiral flat-band optical cavity with atomically thin mirrors
  title_type: original
  lang: en

## Description

- description: A fundamental requirement for photonic technologies is the ability
    to control the confinement and propagation of light. Widely utilized platforms
    include two-dimensional (2D) optical microcavities in which electromagnetic waves
    are confined between either metallic or multi-layer dielectric distributed Bragg
    reflectors. However, the fabrication complexities of thick Bragg reflectors and
    high losses in metallic mirrors have motivated the quest for efficient and compact
    mirrors. Recently, 2D transition metal dichalcogenides hosting tightly bound excitons
    with high optical quality have emerged as promising atomically thin mirrors. In
    this work, we propose and experimentally demonstrate a sub- wavelength 2D nano-cavity
    using two atomically thin mirrors with degenerate resonances. Angle- resolved
    measurements show a flat dispersion of the optical mode, which sets this system
    apart from conventional photonic cavities. Remarkably, we demonstrate how the
    excitonic nature of the mirrors enables the formation of chiral and tunable optical
    modes upon the application of an external magnetic field. Moreover, we show the
    tunability of the confined mode via electrical contacts, pump intensity, and temperature.
    Our work establishes a new regime for engineering intrinsically chiral sub-wavelength
    optical cavities and opens avenues for realizing spin-photon interfaces and exploring
    chiral many-body cavity electrodynamics.
  description_type: abstract
  lang: und

## Creator

- name: Daniel G. Suárez-Forero
  role: author
  orcid: https://orcid.org/0000-0002-2757-6320
- name: Ruihao Ni
  role: author
  orcid: https://orcid.org/0000-0001-9923-8809
- name: Supratik Sarkar
  role: author
  orcid: https://orcid.org/0000-0003-2645-2307
- name: Mahmoud Jalali Mehrabad
  role: author
  orcid: https://orcid.org/0000-0002-9809-9998
- name: Erik Mechtel
  role: author
- name: Valery Simonyan
  role: author
  orcid: https://orcid.org/0000-0002-2577-3240
- name: Andrey Grankin
  role: author
- 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: Suji Park
  role: author
  orcid: https://orcid.org/0000-0002-2269-7705
- name: Houk Jang
  role: author
- name: Mohammad Hafezi
  role: author
  orcid: https://orcid.org/0000-0003-1679-4880
- name: You Zhou
  role: author
  orcid: https://orcid.org/0000-0002-9854-545X

## Contact agent



## Publisher

organization: American Association for the Advancement of Science (AAAS)

## Managing organization



## Keyword

- subject: Photonic technologies
  schema: not_defined
- subject: optical microcavities
  schema: not_defined
- subject: excitonic materials
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '10'
  issue: '51'

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## Fileset

- id: de4bf23f-ea4e-48d6-a9b4-0262ceeddc63
  filename: sciadv.adr5904.pdf
  content_type: application/pdf
  size: 4236403
  md5: a498b22a087da9d49f20711ea9d660c6

## Thumbnail

fileset_id: de4bf23f-ea4e-48d6-a9b4-0262ceeddc63
filename: sciadv.adr5904.pdf