论文标题
具有远距离交换相互作用的无序旋转链中的激发转移
Excitation transfer in disordered spin chains with long-range exchange interactions
论文作者
论文摘要
我们通过与对角线和异对决疾病的远程相互作用的自旋链通过远程相互作用的自旋链检查自旋激发或极化转移。为此，我们确定了链条的单个征收特征态的平均定位长度，以实现疾病的各种优势。然后，我们在链边界上识别具有较大定位长度的系统的能量本质状态，该链边界适合在发件人和接收器之间传递连接到链条相对端的旋转之间的激发。我们量化了两个转移方案的性能，涉及发件人和接收器旋转到链条的弱静态耦合，并依赖于时间依赖的耦合，从而通过链的中间特征状态实现了激发刺激的绝热通道，从而提高了性能。
We examine spin excitation or polarization transfer via long-range interacting spin chains with diagonal and off-diagonal disorder. To this end, we determine the mean localization length of the single-excitation eigenstates of the chain for various strengths of the disorder. We then identify the energy eigenstates of the system with large localization length and sufficient support at the chain boundaries that are suitable to transfer an excitation between the sender and receiver spins connected to the opposite ends of the chain. We quantify the performance of two transfer schemes involving weak static couplings of the sender and receiver spins to the chain, and time-dependent couplings realizing stimulated adiabatic passage of the excitation via the intermediate eigenstates of the chain which exhibits improved performance.
