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Topological Floquet-Thouless Energy Pump.

Michael H Kolodrubetz1,2,3, Frederik Nathan4, Snir Gazit2

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Summary
This summary is machine-generated.

We discovered a new phase in adiabatic pumping where energy, not charge, is topologically quantized. This novel energy pump is robust against disorder and interactions, similar to the Thouless charge pump.

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Area of Science:

  • Condensed matter physics
  • Quantum mechanics
  • Topological phases of matter

Background:

  • Adiabatic pumping typically transfers charge.
  • Periodic drives introduce complex dynamics.
  • Topological invariants protect quantized phenomena.

Purpose of the Study:

  • Explore adiabatic pumping under periodic driving.
  • Identify new topological phases.
  • Characterize the robustness of the phenomenon.

Main Methods:

  • Theoretical exploration of adiabatic pumping.
  • Numerical simulations of the system.
  • Analysis of topological invariants (winding number).

Main Results:

  • Discovery of a new phase where energy is pumped.
  • Topological invariant identified as a winding number.
  • High robustness against disorder and interactions demonstrated.

Conclusions:

  • A novel energy pumping mechanism exists.
  • This phenomenon shares robustness characteristics with the Thouless charge pump.
  • Experimental measurement protocols are proposed.