AI 中文总结
研究应变晶体中涡旋光的非局域轨道角动量二向色性，通过二维狄拉克材料中的非均匀应变提供横向动量转移绕过禁戒条件，得出二向色性分解公式及微尺度高斯气泡的共振电导率情况。
AI 中文摘要
涡旋光在其横向相位中携带轨道角动量（OAM），与编码在偏振中的自旋不同。我们表明，即使包括光学非局域性和多极光 - 物质耦合，该相位在任何连续平移不变系统中都不会产生OAM二向色性。二维狄拉克材料中的非均匀应变通过长波长赝规范场提供横向动量转移来绕过此禁戒条件，使得OAM二向色性分解为非局域弹光张量以及涡旋横向相电流与应变场的重叠。对于微米尺度的高斯气泡，共振OAM奇数电导率达到\(\sim10^{-3}e^2/\hbar\)，在差分光学测量范围内。
英文摘要
Vortex light carries orbital angular momentum (OAM) in its transverse phase. We show that the transverse phase cannot generate OAM-odd absorption in any continuously translation-invariant system, even when optical nonlocality and multipole light--matter coupling are included. The combination of broken continuous translation symmetry and finite-range optical nonlocality permits OAM dichroism through transverse-momentum mixing; in nonuniformly strained Dirac materials, the dichroism factorizes into a nonlocal elasto-optic tensor and the overlap of the strain texture with the vortex transverse phase current.
CommentsRevised abstract and presentation; minor corrections
