Topological spin transport of photons: the optical Magnus effect and Berry phase
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The Letter develops a modified geometrical optics (GO) of smoothly inhomogeneous isotropic medium, which takes into account two topological phenomena: Berry phase and the optical Magnus effect. Taking into account the correspondence between a quasi-classical motion of a quantum particle with a spin and GO of an electromagnetic wave in smoothly inhomogeneous media, we have introduced the standard gauge potential associated with the degeneracy in the wave momentum space. This potential corresponds to the magnetic-monopole-like field (Berry curvature), which causes the topological spin (polarization) transport of photons. The deviations of waves of right-hand and left-hand polarization occur in the opposite directions and orthogonally to the principal direction of motion. This produces a spin current directed across the principal motion. The situation is similar to the anomalous Hall effect for electrons. In addition, a simple scheme of the experiment allowing one to observe the topological spin splitting of photons has been suggested.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/9ca63577ec6684456760313f9e36ba57d8e7c59e
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Transverse and longitudinal angular momenta of light (2015, background): “account the spin–orbit interaction in Maxwell equations with ‘‘semi-classical’’ wavelength-order corrections [196], one can derive the helicity-dependent corrections to the traditional geometrical-optics equations for the trajectory of light [63,65,67, 173,180].”
- Non-relativistic conformal symmetries and Newton–Cartan structures (2009, unknown): “Even more importantly, the model of “Galilean photon” is a trivial extension of the Euclidean model presented in [53], which has been used to explain the recently observed spin-Hall effect for light [ 54 ].”