Journal article

Quantum Emission from Defects in Single-Crystalline Hexagonal Boron Nitride

Toan Trong Tran, Cameron Zachreson, Amanuel Michael Berhane, Kerem Bray, Russell Guy Sandstrom, Lu Hua Li, Takashi Taniguchi, Kenji Watanabe, Igor Aharonovich, Milos Toth



Bulk hexagonal boron nitride (hBN) is a highly nonlinear natural hyperbolic material that attracts major attention in modern nanophotonics applications. However, studies of its optical properties in the visible part of the spectrum and quantum emitters hosted by bulk hBN have not been reported to date. In this work, we study the emission properties of hBN crystals in the red spectral range using sub-band-gap optical excitation. Quantum emission from defects is observed at room temperature and characterized in detail. Our results advance the use of hBN in quantum nanophotonics technologies and enhance our fundamental understanding of its optical properties.


Awarded by Australian Research Council

Awarded by Australian Research Council Discovery Early Career Research Award

Awarded by Grants-in-Aid for Scientific Research

Funding Acknowledgements

This research was partly undertaken on the soft x-ray beam line at the Australian Synchrotron, Victoria, Australia. The work was supported in part by the Australian Research Council (Project No. DP140102721) and FEI Company. I. A. is supported by an Australian Research Council Discovery Early Career Research Award (Project No. DE130100592). Partial funding for this research was provided by the Air Force Office of Scientific Research, United States Air Force.