A broadband tapered nanocavity for efficient nonclassical light emission.
A broadband tapered nanocavity for efficient nonclassical light emission.
复制标题
用于高效非经典光发射的宽带锥形纳米腔。
作者：
N. Gregersen;D. McCutcheon;J. Mørk;J. Gerard;J. Claudon
我们提出了一种锥形纳米腔的设计，通过将一根光子线部分夹在平面金反射器和集成在锥形线中的几个周期的布拉格反射镜之间来获得。由于其超小的模式体积(0.71λ3/n3)，这种混合纳米腔极大地提高了嵌入量子点的自发辐射速率(珀塞尔因子：6)，同时提供了较宽的操作带宽(全宽半高：20 nm)。此外，顶部的锥形截面将腔体远场发射塑造成具有非常定向的输出光束，具有高斯空间轮廓。对于实际的锥形尺寸，预测了高斯光束的总输出耦合效率为0.8。可预见的应用包括非经典光态的明亮光源，例如不可分辨的单光子的宽可调谐光源和偏振纠缠光子对。
We present the design of a tapered nanocavity, obtained by sandwiching a photonic wire section between a planar gold reflector and a few-period Bragg mirror integrated into the tapered wire. Thanks to its ultrasmall mode volume (0.71 λ3/n3), this hybrid nanocavity largely enhances the spontaneous emission rate of an embedded quantum dot (Purcell factor: 6), while offering a wide operation bandwidth (full-width half-maximum: 20 nm). In addition, the top tapered section shapes the cavity far-field emission into a very directive output beam, with a Gaussian spatial profile. For realistic taper dimensions, a total outcoupling efficiency to a Gaussian beam of 0.8 is predicted. Envisioned applications include bright sources of non-classical states of light, such as widely tunable sources of indistinguishable single photons and polarization-entangled photon pairs.
影响因子：
16.6
作者：
Gschrey M;Thoma A;Schnauber P;Seifried M;Schmidt R;Wohlfeil B;Krüger L;Schulze JH;Heindel T;Burger S;Schmidt F;Strittmatter A;Rodt S;Reitzenstein S
通讯作者：
Reitzenstein S