论文标题
封闭和开放量子电池中的储能和连贯性
Energy storage and coherence in closed and open quantum batteries
论文作者
论文摘要
我们研究了连贯性在封闭和开放量子电池中的作用。我们获得了与连贯性的封闭量子和开放量子电池所做的工作或能量交换的上限。具体而言，我们表明，可以通过编码电池演化的单一操作员的频谱基础的频谱基础，可以通过密度矩阵的Hilbert-Schmidt连贯性来界定储能。我们还表明，可以通过评估其换向器，根据单一操作员的基础，可以根据电池的哈密顿连贯性获得类似的绑定。我们将这些边界应用于封闭系统案例中的4状态量子系统和各向异性XY ISING模型，以及在开放式情况下的自旋 - 玻色子模型。
We study the role of coherence in closed and open quantum batteries. We obtain upper bounds to the work performed or energy exchanged by both closed and open quantum batteries in terms of coherence. Specifically, we show that the energy storage can be bounded by the Hilbert-Schmidt coherence of the density matrix in the spectral basis of the unitary operator that encodes the evolution of the battery. We also show that an analogous bound can be obtained in terms of the battery's Hamiltonian coherence in the basis of the unitary operator by evaluating their commutator. We apply these bounds to a 4-state quantum system and the anisotropic XY Ising model in the closed system case, and the Spin-Boson model in the open case.
