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Wannier-Stark Field Charging and Environment-Assisted Ergotropy in Quantum Batteries

How a linearly tilted Wannier-Stark field, added to onsite interactions, charges a quantum battery prepared in the ground state of the Bose- or Fermi-Hubbard model, raising the maximum power above a critical field strength. Includes environment-assisted ergotropy, where coupling edge sites to hot thermal baths lets work be extracted without conventional charging.

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Constructive impact of Wannier-Stark field on environment-boosted quantum batteries Animesh Ghosh1

This paper studies quantum batteries whose initial state is the ground state of the Bose-Hubbard or Fermi-Hubbard model and asks how adding a Wannier-Stark (linearly tilted) field to the onsite inter…