论文标题
可控的多光束分裂，在赫尔米尼亚和非高铁对称的波导系统中
Controllable multiple beam splitting in Hermitian and non-Hermitian symmetric coupled waveguide systems
论文作者
论文摘要
我们研究了具有一个输入和2N输出波导通道的遗传和非象征对称耦合的波导中的高保真多光束分裂。在Hermitian系统中，我们基于刺激的拉曼绝热通道（Stirap）和从中波导到外波导的任意比例在传播系数不匹配的情况下，使用捷径（STA）技术不匹配的情况不匹配。在具有耗散波导的非热系统中，可以通过通过非热的STA方法消除非绝热耦合来实现紧凑和健壮的光束分裂。我们通过梁传播方法（BPM）进一步验证理论预测的可行性。建议的多个光束拆分器为实现片上高宽带光照射学的新机会，在短距离内具有高忠诚度。
We investigate high-fidelity multiple beam splitting in Hermitian and non-Hermitian symmetric coupled waveguides with one input and 2N output waveguide channels. In Hermitian systems, we realize adiabatically light splitting in resonant case based on the stimulated Raman adiabatic passage (STIRAP) and arbitrary proportion from the middle waveguide to outer waveguides in propagation coefficients mismatch case using shortcuts to adiabaticity (STA) technique. In non-Hermitian systems with even waveguides being dissipative, the compact and robust beam splitting can be achieved by eliminating the non-adiabatic coupling via the non-Hermitian STA method. We further verify the feasibility of our theoretical predictions by means of the beam propagation method (BPM). The suggested multiple beam splitters open new opportunities for the realization of on-chip high-bandwidth photonics with high fidelity in short distances.
