Modulation of spontaneous emission near graphene/hBN multilayers
Modulation of spontaneous emission near graphene/hBN multilayers
复制标题
石墨烯/六方氮化硼多层膜附近自发发射的调制
DOI：
10.1364/josab.409760
复制
发表时间：
2020-12
期刊：
影响因子：
--
通讯作者：
Qing-Hua Liao
中科院分区：
文献类型：
--
作者：
Li-Mei Ye;Hua-Nan Liang;Tong-Biao Wang;De-Jian Zhang;Wen-Xing Liu;Tian-Bao Yu;Qing-Hua Liao
详细研究了三种不同样品（即石墨烯覆盖的六方氮化硼（hBN）块体（单电池）、石墨烯/六方氮化硼/石墨烯夹层（三明治）和石墨烯/六方氮化硼/石墨烯/六方氮化硼（双电池））附近量子发射器的自发发射。由于六方氮化硼的双曲特性，石墨烯/六方氮化硼样品附近的自发发射衰减率可以增加几个数量级。对于单电池，Purcell 因子曲线中出现两个尖峰，对应于 hBN 的双曲频率范围。通过石墨烯支持的表面等离子体（SP）和六方氮化硼支持的双曲声子极化激元（HPP）的耦合，石墨烯的化学势可以主动控制珀塞尔因子。随着化学势的增加，当量子发射器和样品之间的距离小于 1/1000 跃迁波长时，珀塞尔因子会降低。相反，当距离范围从 1/1000 到 1/100 过渡波长时，珀塞尔因子会增加。研究了反射配置中不同样品附近的两个量子发射器之间的相互作用，并且根据两个发射器之间的距离，相互作用表现出超辐射态和次辐射态之间的振荡。量子发射器之间的相互作用也可以通过石墨烯的化学势自由控制。这项工作为调节自发发射提供了有意义的基础，并且对于扩大新兴材料在光与物质相互作用领域的应用具有重要价值。
The spontaneous emissions of a quantum emitter near three different samples, namely, graphene-covered hexagonal boron nitride (hBN) bulk (monocell), graphene/hBN/graphene sandwich (sandwich), and graphene/hBN/graphene/hBN (double-cell), are investigated in detail. The spontaneous emission decay rate near the graphene/hBN samples can be increased by several orders of magnitude because of the hyperbolic characteristics of hBN. For the monocell, two sharp peaks appear in the Purcell factor curve, corresponding to the hyperbolic frequency ranges of hBN. The Purcell factor can be actively controlled by the chemical potential of graphene via the coupling of surface plasmons (SPs) supported by graphene and hyperbolic phonon polaritons (HPPs) supported by hBN. As the chemical potential increases, the Purcell factor decreases when the distance between the quantum emitter and the sample is less than 1/1000 transition wavelength. Conversely, the Purcell factor increases when the distance ranges from 1/1000 to 1/100 transition wavelength. The interaction between two quantum emitters in the proximity of different samples in reflective configuration is investigated, and the interaction exhibits an oscillation between superradiant and subradiant states in accordance with the separation between the two emitters. The interaction between quantum emitters can also be controlled freely with the chemical potential of graphene. This work provides a meaningful basis for modulating the spontaneous emission, and could be valuable in expanding the application of new and emerging materials in the field of light–matter interaction.
登录
查看更多内容
DOI：
10.1142/10255
发表时间：
2017
期刊：
--
影响因子：
--
作者：
R. Binder
通讯作者：
R. Binder
影响因子：
4.6
作者：
Messina, Riccardo;Ben-Abdallah, Philippe
通讯作者：
Ben-Abdallah, Philippe
影响因子：
2.8
作者：
V. Klimov;V. Letokhov
通讯作者：
V. Klimov;V. Letokhov
影响因子：
8.6
作者：
KLEPPNER, D
通讯作者：
KLEPPNER, D
影响因子：
--
作者：
DICKE, RH
通讯作者：
DICKE, RH