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Related Experiment Videos

Hall effect of light.

Masaru Onoda1, Shuichi Murakami, Naoto Nagaosa

  • 1Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 4, Tsukuba 305-8562, Japan. m.onoda@aist.go.jp

Physical Review Letters
|September 28, 2004
PubMed
Summary
This summary is machine-generated.

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We reveal how light

Area of Science:

  • Optics and Photonics
  • Quantum Mechanics
  • Condensed Matter Physics

Background:

  • Understanding light's behavior is crucial in optics.
  • Berry curvature influences particle dynamics in quantum systems.
  • Angular momentum conservation is a fundamental principle.

Purpose of the Study:

  • To derive a semiclassical equation of motion for light wave packets.
  • To incorporate Berry curvature effects in momentum space.
  • To investigate the interplay of orbital and spin angular momenta in light.

Main Methods:

  • Semiclassical derivation of wave packet equations of motion.
  • Inclusion of Berry curvature in momentum-space.
  • Analysis of angular momentum conservation.

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Main Results:

  • A novel equation naturally describes the conservation of total angular momentum of light.
  • Demonstrated a polarization-dependent Hall effect of light.
  • Observed a wave-packet shift perpendicular to dielectric constant gradients.

Conclusions:

  • The derived equation accurately models the spin-orbital interplay in light.
  • The polarization-dependent Hall effect of light is explained.
  • Enhanced effects are proposed in photonic crystals.