Collective dissipation in a spin-chain quantum battery creates dark and frozen states, and the energy of these protected states, not their count, controls how much work can be extracted.
(A8) To satisfy the dark state criterionJ ±|ψ⟩=0, we substitute our state expansion into the ladder operator eigenvalue rela- tion: J±|ψ⟩= ∑ S,M,α aS,M,α q S(S+1)−M(M±1)|S,M±1,α⟩=0
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Collective-dissipation-induced dark and metastable-like states for enhanced quantum battery performance
Collective dissipation in a spin-chain quantum battery creates dark and frozen states, and the energy of these protected states, not their count, controls how much work can be extracted.