Abstract
The Su-Schrieffer-Heeger (SSH) model has recently received considerable attention in condensed matter because it describes a typical one-dimensional system with topological edge states. Here, we investigate SSH-based charging protocols of quantum batteries (QB) with N quantum cells. This SSH QB hopping interaction induced ground state splitting makes the different effects of the dimerize parameter to the QB in the different quantum phase region. In the non-splitting region, the dimerize parameter has little influence on the QB. Whereas the fully-splitting region, the dimerize parameter has a significantly quantum advantage to the energy and ergotropy in the ground state fully splitting region, which leads the dimerize spin couples will have larger occupations than other spins. Although we have enhanced energy and ergotropy by the dimerize parameter, QB's capacity will decrease.
Highlights
The quantum battery (QB) has emerged as a new research field and recently has attracted remarkable attention [1]
We study the energy and ergotropy of QBs with the nearest-neighbor interaction and the dimerization parameter
II, we introduce the model of the SSH QB and define the energy and ergotropy of a QB
Summary
The quantum battery (QB) has emerged as a new research field and recently has attracted remarkable attention [1]. It has been verified that an N-spin chain coupled to a cavity field can significantly enhance the charging power of QBs [3,38]. We dealt with a spin chain with identical nearest hopping interactions between neighboring spins, which could significantly enhance the energy and ergotropy of QBs [42]. We study the energy and ergotropy of QBs with the nearest-neighbor interaction and the dimerization parameter. We analyze how the dimerization parameter influences the energy and ergotropy of QBs in different regions. We study the energy charging and release of a SSH QB. There is a hopping interaction between nearest-neighbor spins with strength J and the dimerization constant is δ.
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