Izhak Shani, Karnieli Aviv, Yesharim Ofir, Tsesses Shai, Arie Ady
Opt Lett. 2024 Feb 15;49(4):1025-1028. doi: 10.1364/OL.517794.
More than three decades after the inception of electron spin-based information encoding inspired by nonlinear electro-optic devices, we present a complementary approach: nonlinear optical devices directly inspired by spintronics. We theoretically propose an all-optical spin-valve device and a spin-dependent beam splitter, where the optical pseudospin is a superposition of signal and idler beams undergoing a sum-frequency generation process inside a 2D nonlinear photonic crystal. We delve into the operation of these devices, examining key properties such as the transmission angle and splitting ratio, optically controlled by the pump beam. Our findings open new avenues for both classical and quantum optical information processing in the frequency domain.
在受非线性电光器件启发的基于电子自旋的信息编码诞生三十多年后，我们提出了一种互补方法：直接受自旋电子学启发的非线性光学器件。我们从理论上提出了一种全光自旋阀器件和一个自旋依赖型分束器，其中光学赝自旋是在二维非线性光子晶体内部经历和频产生过程的信号光与闲频光的叠加。我们深入研究了这些器件的运行情况，考察了诸如由泵浦光光学控制的传输角和分光比等关键特性。我们的研究结果为频域中的经典和量子光学信息处理开辟了新途径。
