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quant-ph2024
Non-Hermitian Spin-Spin Interaction Mediated by Chiral Phonons
Haowei Xu, Guoqing Wang, Changhao Li +3
Non-Hermiticity and chirality are two fundamental properties known to give rise to various intriguing phenomena. However, the interplay between these properties has been rarely exp…
quant-ph2024
Comment on "High-Power Collective Charging of a Solid-State Quantum Battery"
Haowei Xu, Ju Li
In the Letter [Physical Review Letters 120, 117702 (2018)], Ferraro \emph{et al.} claimed a quantum advantage in the Dicke quantum battery (QB), whereby two-level systems (TLS)…
quant-ph2024
Exponentially Enhanced non-Hermitian Cooling
Haowei Xu, UroÅ¡ DeliÄ, Guoqing Wang +3
Certain non-Hermitian systems exhibit the skin effect, whereby the wavefunctions become exponentially localized at one edge of the system. Such exponential amplification of wavefun…