Cathodoluminescence monitoring of quantum emitter activation in hexagonal boron nitride

被引:16
|
作者
Roux, Sebastien [1 ,2 ]
Fournier, Clarisse [1 ]
Watanabe, Kenji [3 ]
Taniguchi, Takashi [4 ]
Hermier, Jean-Pierre [1 ]
Barjon, Julien [1 ]
Delteil, Aymeric [1 ]
机构
[1] Univ Paris Saclay, UVSQ, CNRS, GEMaC, F-78000 Saclay, France
[2] Univ Paris Saclay, ONERA, CNRS, Lab Etud Microstruct, F-92322 Chatillon, France
[3] Natl Inst Mat Sci, Res Ctr Funct Mat, 1 1 Namiki, Tsukuba 3050044, Japan
[4] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, 1 1 Namiki, Tsukuba 3050044, Japan
关键词
SINGLE-PHOTON EMISSION;
D O I
10.1063/5.0126357
中图分类号
O59 [应用物理学];
学科分类号
摘要
The ability to locally activate or generate quantum emitters in two-dimensional materials is of major interest for the realization of integrated quantum photonic devices. In particular, hexagonal boron nitride (hBN) has recently been shown to allow a variety of techniques for obtaining quantum emitters at desired locations. Here, we use cathodoluminescence (CL) to monitor in situ the local activation of color centers by an electron beam in hBN. We observe that the CL signal saturates at a given surface dose, independently of the electron current density. Based on photoluminescence and photon correlations, we show that the number of photoactive color centers is proportional to the CL signal, and we estimate the maximum density of quantum emitters that can be generated by our technique. Our results provide insight about the activation mechanism and could help to optimize the controlled generation of single photon sources in hexagonal boron nitride.
引用
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页数:4
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