AI 中文总结
该研究利用广义含时金兹堡-朗道模拟，在带非对称孔洞的图案化超导薄膜中，通过结构化光驱动实现了光可调超导二极管效应，明确了孔洞阵列、光学模式对响应的调控规律。
AI 中文摘要
结构化光为控制超导输运提供了一种无需永久改性材料或施加静态偏置的途径。本文中，我们证明结构化光驱动可在带有非对称孔洞的图案化超导薄膜中产生超导二极管响应。通过广义含时金兹堡-朗道模拟，我们发现光驱动在无结几何结构中产生整流直流光电压和零偏置定向超电流不平衡，连续驱动的二极管效率约为10⁻³，脉冲驱动效率可达10⁻²。该响应同时受孔洞阵列和光学模式调控：增加非对称孔洞数量可增强整流效果，反转圆偏振度可反转二极管极性，光学空间模式会显著改变定向响应的大小和极性；脉冲激发可将零偏置线切电流不平衡提升至百分比水平。对于线偏振照射，非对称超构晶体将驱动转化为局域手性超电流运动，诱导类逆法拉第效应机制以实现动力学时间反演对称性破缺。这些结果确立了图案化超导薄膜作为光可调超导二极管行为的可行平台。
英文摘要
Structured light offers a route to control superconducting transport without permanently modifying the material or applying a static bias. Here we show that structured optical driving can generate a superconducting diode response in patterned superconducting films with asymmetric holes. Using generalized time-dependent Ginzburg Landau simulations, we find that optical driving produces rectified dc photovoltages and zero bias directional supercurrent imbalance in a junction free geometry, with continuous-drive diode efficiencies of order $10^{-3}$ and pulsed efficiencies reaching $10^{-2}$. The response is controlled by both the hole array and the optical mode. Increasing the number of asymmetric holes enhances rectification, reversing circular helicity reverses the diode polarity, and the optical spatial mode strongly modifies the magnitude and polarity of the directional response. Pulsed excitation enhances the zero bias line cut current imbalance to the percent level. For linearly polarized illumination, the asymmetric metacrystal converts the drive into local chiral supercurrent motion, inducing an inverse Faraday effect like mechanism for dynamical time reversal symmetry breaking. These results establish patterned superconducting films as a viable platform for light-tunable superconducting diode behavior.
Comments8 pages, 6 figures
