论文标题
在合成紧密结合晶格中对运输的反浸润
Counterdiabatic control of transport in a synthetic tight-binding lattice
论文作者
论文摘要
对实验瑕疵的稳健状态转换对于量子信息科学和量子传感的应用至关重要。使用基础系统哈密顿量的知识积极纠正绝热效果的相反粉（CD）方法是实现同时快速，稳定的状态转换的强大工具。到目前为止，用于CD驱动的协议在其实验实现中受到了仅两个或三个级别的离散系统以及具有比较对称性的批量系统。在这里，我们将CD控制的工具扩展到由多达9个位点组成的离散合成晶格系统。尽管该系统具有消失的差距，因此在热力学极限上没有绝热的支持，但我们表明CD方法仍然可以给出大量的，几种刻板的阶级，改善忠诚度比天真的快速绝热方案。
Quantum state transformations that are robust to experimental imperfections are important for applications in quantum information science and quantum sensing. Counterdiabatic (CD) approaches, which use knowledge of the underlying system Hamiltonian to actively correct for diabatic effects, are powerful tools for achieving simultaneously fast and stable state transformations. Protocols for CD driving have thus far been limited in their experimental implementation to discrete systems with just two or three levels, as well as bulk systems with scaling symmetries. Here, we extend the tool of CD control to a discrete synthetic lattice system composed of as many as nine sites. Although this system has a vanishing gap and thus no adiabatic support in the thermodynamic limit, we show that CD approaches can still give a substantial, several order-of-magnitude, improvement in fidelity over naive, fast adiabatic protocols.
