面向光学伊辛机器偏振控制的超表面集成VCSEL
Metasurface-integrated VCSEL designed for polarization control in optical Ising machines
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中文总结 AI 辅助
本文设计并制备超表面集成VCSEL以降低其自然各向异性，实现偏振控制，数值证明可增强伊辛系统注入锁定效果，并将3比特光子伊辛机计算精度提升至两倍以上。
中文摘要 AI 辅助
垂直腔面发射激光器（VCSEL）的正交偏振态可用于描述伊辛哈密顿量的候选解，这对于求解二次无约束二元优化问题非常有用。然而，VCSEL的自然各向异性往往过度偏向一种偏振态，这阻碍了系统按预期工作。在本工作中，我们设计并制备了一种超表面，它可能使VCSEL具有降低的非期望各向异性。通过改变超表面中纳米结构的几何尺寸，可以改变输出光的偏振态。基于注入锁定理论和自旋翻转模型，我们数值证明了具有较低各向异性的VCSEL更容易受到伊辛系统所需的注入锁定的影响。此外，我们数值研究了基于VCSEL的3比特伊辛系统的演化，并验证了光子伊辛机器的计算精度可提高至其具有较高各向异性对应物的两倍以上。
英文摘要
The orthogonal polarization states of vertical-cavity surface-emitting lasers (VCSELs) can be used to describe candidate solutions to the Ising Hamiltonian, which is useful for solving quadratic unconstrained binary optimization problems. However, the natural anisotropy of VCSELs tends to overly favor one polarization state, which impedes the system from working as desired. In this work, we have designed and fabricated a metasurface, which may lead to a VCSEL with reduced undesired anisotropy. By changing the geometric size of nano-structures in the metasurface, the polarization state of the output light can be altered. Based on the injection-locking theory and spin-flip model, we numerically show that VCSELs with lowered anisotropy are more easily affected by the injection locking needed in Ising systems. Additionally, we numerically study the evolution of a 3-bit VCSEL-based Ising system and verify that the computational accuracy of the photonic Ising machine can be improved to more than twice that of its counterpart with higher anisotropy.
发表机构
- University of Science and Technology of China（中国科学技术大学）
- National University of Singapore（新加坡国立大学）
机构由 AI 辅助整理，请以论文原文为准。
