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Photodynamics of quantum emitters in hexagonal boron nitride revealed by low-temperature spectroscopy

机译:低温光谱学揭示六方氮化硼中量子发射体的光动力学

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摘要

Quantum emitters in hexagonal boron nitride (hBN) have recently emerged as promising bright single photon sources. In this Rapid Communication we investigate in detail their optical properties at cryogenic temperatures. In particular, we perform temperature-resolved photoluminescence studies and measure photon coherence times from the hBN emitters. The obtained value of 81(1) ps translates to a width of ~6.5 GHz which is higher than the Fourier transform limited value of ~32 MHz. To account for the photodynamics of the emitter, we perform ultrafast spectral diffusion measurements that partially account for the coherence times. Our results provide important insight into the relaxation processes in quantum emitters in hBN which is mandatory to evaluate their applicability for quantum information processing.
机译:六方氮化硼(hBN)中的量子发射器最近已成为有前途的明亮单光子源。在本快速通讯中,我们详细研究了它们在低温下的光学特性。特别是,我们进行了温度分辨的光致发光研究,并测量了hBN发射器的光子相干时间。所获得的81(1)ps值转换为〜6.5 GHz的宽度,该宽度大于〜32 MHz的傅立叶变换极限值。为了解决发射器的光动力学问题,我们执行了超快光谱扩散测量,部分测量了相干时间。我们的结果为hBN中量子发射体的弛豫过程提供了重要的见识,这对于评估其在量子信息处理中的适用性是必不可少的。

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  • 来源
    《Physical review》 |2017年第12期|121202.1-121202.5|共5页
  • 作者单位

    Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany;

    Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany;

    Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany;

    Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany;

    School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, NSW 2007, Australia;

    Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany;

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