This report summarizes progress made in understanding properties such as zero-phonon-line energies, emission and absorption polarizations, electron-phonon couplings, strain tuning and hyperfine coupling of single photon emitters in hexagonal boron nitride. The primary aims of this research are to discover the chemical nature of the emitting centres and to facilitate deployment in device applications. Critical analyses of the experimental literature and data interpretation, as well as theoretical approaches used to predict properties, are made. In particular, computational and theoretical limitations and challenges are discussed, with a range of suggestions made to overcome these limitations, striving to achieve realistic predictions concerning the nature of emitting centers. A symbiotic relationship is required in which calculations focus on properties that can easily be measured, whilst experiments deliver results in a form facilitating mass-produced calculations.

中文翻译：

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六方氮化硼中的单光子发射器：进展回顾

本报告总结了在理解六方氮化硼中单光子发射器的零声子线能量、发射和吸收极化、电子-声子耦合、应变调谐和超精细耦合等特性方面取得的进展。这项研究的主要目的是发现发射中心的化学性质并促进在设备应用中的部署。对实验文献和数据解释以及用于预测特性的理论方法进行了批判性分析。特别是讨论了计算和理论的局限性和挑战，提出了一系列克服这些局限性的建议，努力实现关于排放中心性质的现实预测。