论文标题
用激光写的微抛物线镜对量子发射器的无客观激发
Objective-free excitation of quantum emitters with a laser-written micro parabolic mirror
论文作者
论文摘要
量子源（例如量子点或单个分子）的有效激发需要高的NA光学元件，这通常是低温或超快光学的挑战。在这里，我们提出了一个3.2 um宽的抛物面镜，具有0.8 um焦距，通过直接激光在CDSE/CDS胶体量子点上撰写，能够将激发灯聚焦到亚波长斑点，并通过将其准直的束入狭窄的光束来提取产生的发射。该镜子是通过原位体积光刻制造的，可以将其与单个发射器保持一致，并且可以很容易地适应抛物面类似的其他几何形状。从远场到发射极的紧凑型固态传感器在无客观的量子技术中具有重要的应用。
The efficient excitation of quantum sources such as quantum dots or single molecules requires high NA optics which is often a challenge in cryogenics, or in ultrafast optics. Here we propose a 3.2 um wide parabolic mirror, with a 0.8 um focal length, fabricated by direct laser writing on CdSe/CdS colloidal quantum dots, capable of focusing the excitation light to a sub-wavelength spot and to extract the generated emission by collimating it into a narrow beam. This mirror is fabricated via in-situ volumetric optical lithography, which can be aligned to individual emitters, and it can be easily adapted to other geometries beyond the paraboloid. This compact solid-state transducer from far-field to the emitter has important applications in objective-free quantum technologies.
