Nonmagnetic Quantum Emitters in Boron Nitride with Ultranarrow and Sideband-Free Emission Spectra

ACS Nano
Xiangzhi LiStefan Strauf

Abstract

Hexagonal boron nitride (hBN) is an emerging material in nanophotonics and an attractive host for color centers for quantum photonic devices. Here, we show that optical emission from individual quantum emitters in hBN is spatially correlated with structural defects and can display ultranarrow zero-phonon line width down to 45 μeV if spectral diffusion is effectively eliminated by proper surface passivation. We demonstrate that undesired emission into phonon sidebands is largely absent for this type of emitter. In addition, magneto-optical characterization reveals cycling optical transitions with an upper bound for the g-factor of 0.2 ± 0.2. Spin-polarized density functional theory calculations predict possible commensurate transitions between like-spin electron states, which are in excellent agreement with the experimental nonmagnetic defect center emission. Our results constitute a step toward the realization of narrowband quantum light sources and the development of spin-photon interfaces within 2D materials for future chip-scale quantum networks.

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Citations

Feb 24, 2018·Advanced Materials·Andreas W SchellRomain Quidant
Apr 24, 2018·Nanoscale·Zai-Quan XuIgor Aharonovich
Dec 18, 2019·Reports on Progress in Physics·Sajid AliJeffrey Reimers
Nov 9, 2017·Scientific Reports·Nathan ChejanovskyJörg Wrachtrup
Feb 9, 2019·Annual Review of Physical Chemistry·Milos Toth, Igor Aharonovich
Aug 29, 2018·Nature Communications·Shen ZhaoJean-Sébastien Lauret
Jan 16, 2019·Nature Communications·Annemarie L ExarhosLee C Bassett
May 29, 2020·Beilstein Journal of Nanotechnology·Stefania CastellettoAlberto Boretti
Feb 26, 2020·Nature Materials·Andreas GottschollVladimir Dyakonov
Apr 1, 2020·Optics Express·Mads K BollUlrik L Andersen
Feb 9, 2021·The Journal of Physical Chemistry. a·Cesar JaraFrancisco Munoz
Jun 1, 2021·ACS Photonics·Ralph Nicholas Edward MaleinIsaac J Luxmoore
Jun 12, 2021·Scientific Reports·Akbar Basha Dhu-Al-Jalali-Wal-Ikram Shaik, Penchalaiah Palla
Jun 20, 2021·Nature Communications·Clarisse FournierAymeric Delteil
Aug 5, 2021·ACS Nano·James Callum StewartStephan Hofmann
Feb 3, 2018·Nano Letters·Jiandong FengAleksandra Radenovic
Sep 28, 2018·Nano Letters·Qixing WangAndrew T S Wee
May 14, 2020·ACS Nano·Johannes E FröchIgor Aharonovich
May 27, 2020·Nano Letters·Xiaocheng ZhouWanlin Guo
May 10, 2020·Nano Letters·Prince KhatriIsaac J Luxmoore
Jun 9, 2018·ACS Applied Materials & Interfaces·Hanh Ngoc My DuongMilos Toth
Sep 15, 2021·ACS Applied Materials & Interfaces·Marie KrečmarováJuan F Sánchez-Royo
Sep 23, 2021·ACS Applied Materials & Interfaces·Yongliang ChenIgor Aharonovich

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