https://doi.org/10.1140/epjqt/s40507-024-00286-2
Research
Generation of phonon quantum states and quantum correlations among single photon emitters in hexagonal boron nitride
1
Departamento de Ciencias Físicas, Universidad de La Frontera, Casilla 54-D, 4780000, Temuco, Chile
2
Departamento de Física, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
3
Institute of Physics, Pontificia Universidad Católica de Chile, Santiago, Chile
4
Center for Nanotechnology and Advanced Materials CIEN-UC, Avenida Vicuña Mackenna 4860, Santiago, Chile
5
Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Santiago, Chile
6
Instituto de Ciencias Básicas, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
7
Institute of Applied Physics of Moldova State University, Academiei 5, MD-2028, Chişinău, Moldova
Received:
16
January
2024
Accepted:
24
October
2024
Published online:
5
November
2024
Hexagonal boron nitride exhibits two types of defects with great potential for quantum information technologies: single-photon emitters (SPEs) and one-dimensional grain boundaries hosting topologically-protected phonons, termed as topologically-protected phonon lines (TPL). Here, by means of a simple effective model and density functional theory calculations, we show that it is possible to use these phonons for the transmission of information. Particularly, a single SPE can be used to induce single-, two- and qubit-phonon states in the one-dimensional channel, and (ii) two distant SPEs can be coupled by the TPL that acts as a waveguide, thus exhibiting strong quantum correlations. We highlight the possibilities offered by this material-built-in nano-architecture as a phononic device for quantum information technologies.
Key words: Hexagonal boron nitride (hBN) / Single-photon emitters (SPE) / Spin-boson interaction / Qubit / Entanglement / Discord / Fock state / Topological protection / Quantum IBM / Master equation
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjqt/s40507-024-00286-2.
© The Author(s) 2024
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
