论文标题
通过离散时间量子步行产生高度纠缠的状态
Generating highly entangled states via discrete-time quantum walks with Parrondo sequences
论文作者
论文摘要
量子纠缠在量子信息处理中具有多个应用。开发独立于初始条件的高度纠缠状态的方法是一项必不可少的任务。本文中，我们的目标是通过离散时间量子步行产生高度纠缠的状态。我们提出的是确定性的parondo序列，该序列产生的状态通常比仅使用两个硬币之一由序列产生的状态更纠缠得多。我们表明，某些parondo序列会产生高度纠缠的状态，这些状态与所使用的初始状态的阶段无关，并在某些情况下进一步导致最大纠缠状态。我们研究了少数时间步骤的parondo序列以及大量时间步骤的渐近极限。
Quantum entanglement has multiple applications in quantum information processing. Developing methods to generate highly entangled states independent of initial conditions is an essential task. Herein we aim to generate highly entangled states via discrete-time quantum walks. We propose deterministic Parrondo sequences that generate states that are generally much more entangled than states produced by sequences using only one of the two coins. We show that some Parrondo sequences generate highly entangled states, which are independent of the phase of the initial state used and further lead to maximally entangled states in some cases. We study Parrondo sequences for a small number of time steps and the asymptotic limit of a large number of time steps.
