论文标题
等离子增强的极化单光子源直接耦合到光纤
Plasmon-enhanced polarized single photon source directly coupled to an optical fiber
论文作者
论文摘要
纤维耦合，两极化的单光子的明亮来源是基于当今现有的光纤基础架构的任何逼真量子网络的重要组成部分。在这里，我们通过将单个胶体量子点耦合到单个金纳米棒的局部表面等离子体 - 孔子模式，从而在室温下开发一个增强的单个光子的极化源，并在光学纳米纤维的表面结合使用。测量对应于86 $ \％$的极化程度的最大光子发射的最大增强，并在纤维模式下亮度增强了四次。光子与纳米纤维引导的模式的渐态耦合可确保自动耦合到单个模式纤维。我们的技术为实现使用简单复合技术连接到光纤网络的偏振单光子的明亮来源开辟了道路。
A bright source of fiber-coupled, polarized single photons is an essential component of any realistic quantum network based on today's existing fiber infrastructure. Here, we develop a Purcell enhanced, polarized source of single photons at room temperature by coupling single colloidal quantum dots to the localized surface plasmon-polariton modes of single gold nanorods, combined on the surface of an optical nanofiber. A maximum enhancement of photon emission of 62 times was measured corresponding to a degree of polarization of 86 $\%$, and a brightness enhancement of four times in the fiber mode. Evanescent coupling of photons to the nanofiber guided modes ensures automatic coupling to a single mode fiber. Our technique opens the way to realizing bright sources of polarized single photons connected to fiber networks using a simple composite technique.
