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Spin-dependent phenomena at chiral temporal interfaces.

Mohamed Hesham Mohamed Mostafa1, Mohammad S Mirmoosa1, Sergei A Tretyakov1

  • 1Department of Electronics and Nanoengineering, Aalto University, Espoo, Finland.

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|December 5, 2024
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Summary
This summary is machine-generated.

This study reveals spin-dependent phenomena in time-varying media. Linearly polarized light splits into distinct circularly polarized waves at a temporal interface, enabling efficient spin separation and control of light.

Keywords:
spin-dependent phenomenaswitching bianisotropyswitching chiralitytemporal interface

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Area of Science:

  • Optics and Photonics
  • Electromagnetism
  • Materials Science

Background:

  • Recent research explores time-varying electromagnetic media for light control.
  • Spin-dependent phenomena in these dynamic media remain underexplored.

Purpose of the Study:

  • To investigate spin-dependent phenomena at the temporal interface between chiral and dielectric media.
  • To demonstrate the temporal separation of light's spin states.

Main Methods:

  • Theoretical analysis of light interaction with time-varying media.
  • Numerical simulations to validate theoretical predictions.

Main Results:

  • Linearly polarized light splits into right-handed and left-handed circularly polarized waves with different frequencies but same phase velocities.
  • Efficient temporal separation of light's spin states achieved.
  • Spin-dependent gain/loss phenomena observed.

Conclusions:

  • Demonstrated novel spin-dependent phenomena at a temporal interface.
  • Extended the understanding of spin-dependent light interactions from spatial to space-time domains.