paper

Cavity-Heisenberg spin chain quantum battery

arXiv:2206.10181 · doi:10.1103/PhysRevA.106.032212

Abstract

We propose a cavity-Heisenberg spin chain (CHS) quantum battery (QB) with the long-range interactions and investigate its charging process. The performance of the CHS QB is substantially improved compared to the Heisenberg spin chain (HS) QB. When the number of spins , the quantum advantage of the QB's maximum charging power can be obtained, which approximately satisfies a superlinear scaling relation . For the CHS QB, can reach and even exceed , while the HS QB can only reach about . We find that the maximum stored energy of the CHS QB has a critical phenomenon. By analyzing the Wigner function, von Neumann entropy, and logarithmic negativity, we demonstrate that entanglement can be a necessary ingredient for QB to store more energy, but not sufficient.

References in corpus (19)

Cited by in corpus (44)