activity
20222026
most citedInduced Berry Connection and Photonic Spin Hall Effect in Optical Dirac Theory

3 citations · 3 across the 5 of their papers we have counts for

collaborators

6 papers

physics.optics2026

Minkowski and Abraham Momenta Revisited from the Perspective of Photon Dynamics

Lili Yang, Pengming Zhang, Longlong Feng

The distinction between Minkowski and Abraham momenta has traditionally been discussed in the context of electron dynamics. In this work, we revisit the problem from the perspectiv…

physics.optics2026

Exact Helicity-Orbital Coupled Dynamics in Chiral Media: An Optical Dirac Framework for Photonic Rabi Oscillations

Xuhui Cheng, Longlong Feng

We demonstrate that light propagation in reciprocal chiral photonic media admits a unified description in terms of an emergent Dirac structure in helicity space. Starting from Maxw…

physics.optics2026

Photons in Media: A Second-Quantization Scheme Based on a Dirac-like Equation

Lili Yang, Longlong Feng, Pengming Zhang

We develop a second-quantization framework for photons based on the optical Dirac equation of source-free Maxwell theory in generic media. In this formulation, the electromagnetic…

physics.optics2025

Gauge Symmetry as the Origin of Spin-Orbit Coupling of Light

Lili Yang, Longlong Feng, Pengming Zhang

Dual symmetry is an intrinsic property of Maxwell's equations, corresponding to a global U(1) symmetry in vacuum, with helicity as the associated conserved quantity. In this paper,…

physics.optics2025★ 3 cited

Induced Berry Connection and Photonic Spin Hall Effect in Optical Dirac Theory

Lili Yang, Longlong Feng

Within the framework of optical Dirac theory, we present a field-theoretical model of spin-orbit interaction and photonic spin/orbit Hall effects. Our approach reformulates light p…

physics.optics2022

Four-Vector Optical Dirac Equation and Spin-Orbit Interaction of Structured Light

Longlong Feng, Qianfan Wu

The spin-orbit interaction of light is a crucial concept for understanding the electromagnetic properties of a material and realizing the spin-controlled manipulation of optical fi…