Focal Interest
Focal Interest
AI Summary of Peer-Reviewed Research

This page presents an AI-generated summary of a published research paper. The original authors did not write or review this article. [See full disclosure ↓]

Publishing process signals: STRONG — reflects the venue and review process. — venue and review process.

Coherently driven B centres in hBN emit indistinguishable photons

A close-up nighttime photograph of laser optics laboratory equipment mounted on an optical table, showing a precision instrument with multiple optical components and mirrors illuminated by a laser beam passing through the setup.
Research area:OpticsQuantum opticsPhoton

What the study found

The study reports resonantly scattered photons from a coherently driven B centre in hexagonal boron nitride (hBN), with signs of optical coherence in both continuous-wave and pulsed measurements. The authors also report indistinguishable photons, shown through Hong-Ou-Mandel interference from zero-phonon-line emission.

Why the authors say this matters

The authors say B centres in hBN are attractive for integrated quantum photonics because of their narrow linewidth, low wavelength spread, and controllable positioning. They conclude that the results demonstrate potential for applications in integrated quantum information.

What the researchers tested

The researchers used narrow-linewidth emitters integrated in a hybrid metal-dielectric structure to implement cross-polarisation laser rejection. This allowed them to observe resonantly scattered photons and test optical coherence in both continuous-wave and pulsed regimes.

What worked and what didn't

The cross-polarisation laser rejection enabled observation of the resonant signal, and the measurements showed the Mollow triplet in continuous-wave operation and Hong-Ou-Mandel interference in pulsed operation. The reported two-photon interference visibilities for two emitters were 0.93 (+0.07/-0.21) and 0.92 (+0.08/-0.26).

What to keep in mind

The abstract does not describe detailed limitations beyond the earlier difficulty of rejecting backreflected laser light at the same wavelength as the emission. The summary also does not provide additional experimental conditions, sample sizes beyond two emitters for the visibilities, or broader performance limits.

Key points

  • The study reports resonantly scattered photons from a coherently driven B centre in hBN.
  • The authors observed optical coherence signatures in both continuous-wave and pulsed regimes.
  • Hong-Ou-Mandel interference was measured from zero-phonon-line emission.
  • Two emitters showed two-photon interference visibilities of 0.93 and 0.92, with the stated uncertainties.
  • The authors say the findings point to potential use in integrated quantum information.

Disclosure

Research title:
Coherently driven B centres in hBN emit indistinguishable photons
Authors:
Domitille Gérard, Stéphanie Buil, Kenji Watanabe, Takashi Taniguchi, Jean‐Pierre Hermier, Aymeric Delteil
Institutions:
Centre National de la Recherche Scientifique, Université de Versailles Saint-Quentin-en-Yvelines, Université Paris-Saclay, National Institute for Materials Science
Publication date:
2026-02-11
DOI:
10.1038/s41467-026-68555-5
OpenAlex record:
View
AI provenance: This post was generated by OpenAI. The original authors did not write or review this post.

More posts