论文标题
通过选择性声子辅助激发控制HBN颜色中心的光致发光光谱：理论建议
Controlling Photoluminescence Spectra of hBN Color Centers by Selective Phonon-Assisted Excitation: A Theoretical Proposal
论文作者
论文摘要
六角硼硝化硼（HBN）的颜色中心即使在室温下也显示出稳定的单光子发射，使这些系统成为量子信息应用的有前途的候选人。除了这种非凡的特性外，它们与纵向光学（LO）声子的相互作用也很独特，因为它们导致了主导的声子边带（PSB），与零声子线（ZPL）良好分开。在这项工作中，我们利用这种清晰的光谱分离来理论上研究了声子衰变动力学对时间依赖性光致发光（PL）信号的影响。我们的模拟表明，通过使用量身定制的光激发方案，可以在两个LO模式之间创建叠加，从而导致声子量子beat在时间相关的PL信号中表现出来。
Color centers in hexagonal boron nitride (hBN) show stable single photon emission even at room temperature, making these systems a promising candidate for quantum information applications. Besides this remarkable property, also their interaction with longitudinal optical (LO) phonons is quite unique because they lead to dominant phonon sidebands (PSBs), well separated from the zero phonon line (ZPL). In this work we utilize this clear spectral separation to theoretically investigate the influence of phonon decay dynamics on time-dependent photoluminescence (PL) signals. Our simulations show, that by using tailored optical excitation schemes it is possible to create a superposition between the two LO modes, leading to a phonon quantum beat that manifests in the time-dependent PL signal.
