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Representing Quantum Information with Digital Coding Metasurfaces.

Guo Dong Bai1,2, Tie Jun Cui1,2

  • 1State Key Laboratory of Millimeter Wave Southeast University Nanjing 210096 China.

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Summary
This summary is machine-generated.

Digital coding metasurfaces can mimic quantum information by exploiting wave-structure interactions. This research demonstrates their potential for advanced information representation beyond classical computing limits.

Keywords:
classical entanglementsmetasurfacessuperposition

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Area of Science:

  • Optics and Information Science
  • Metamaterials and Wave Phenomena

Background:

  • Digital coding metasurfaces offer powerful, diversified information representation through wave-structure interactions.
  • Exploiting multiple degrees of freedom (DoFs) in metasurfaces expands information capacity beyond traditional circuits.
  • The full potential of digital coding metasurfaces for information representation remains an open research question.

Purpose of the Study:

  • To investigate the capacity of classical metasurfaces to mimic quantum information.
  • To propose methods for simulating quantum phenomena using engineered meta-atoms.
  • To explore the expansion of information representation in coding metasurfaces.

Main Methods:

  • Simulation of a two-level spin system using meta-atoms to construct optical spin state superposition.
  • Utilizing geometric-phase elements with nonseparable coding states.
  • Inducing classical entanglement between polarization and spatial modes.

Main Results:

  • Demonstrated that classical metasurfaces can effectively mimic qubit and quantum information.
  • Successfully constructed superposition for two optical spin states.
  • Achieved classical entanglement between polarization and spatial modes, with conditions for maximal entanglement identified.

Conclusions:

  • Classical metasurfaces can expand information representation by mimicking quantum information.
  • Engineered metasurfaces provide an ultrathin platform for simulating quantum phenomena.
  • This work bridges wave-behavior, information science, and quantum information concepts.