论文标题
快速量子状态转移和通过黑暗途径的腔耦合许多量子的纠缠
Fast quantum state transfer and entanglement for cavity-coupled many qubits via dark pathways
论文作者
论文摘要
量子状态转移（QST）和纠缠状态发电（ESG）是现代量子信息处理的重要基础。为了实现这些任务，惯例的智慧是咨询量子的绝热进化，这是耗时的，因此是低忠诚度的。在这里，使用与绝热技术的快捷方式，我们提出了一种通用方法，可以通过其黑暗途径在许多量子器系统中实现高保真QST和ESG，可以进一步设计其用于具有不同优化目的的高效率量子任务。具体而言，使用适当的黑暗途径，可以在任何两个量子位之间进行QST和ESG，而无需将其他QST解耦，这简化了实验演示。同时，所有量子位中的ESG也可以单步实现。此外，我们的方案可以在许多量子系统中实施，我们说明了其在超导量子电路上的实现。因此，我们提出了一种有力的选择性量子操作的有力策略，这在腔耦合量子系统中有希望，并且可以在量子信息处理中找到许多方便的应用。
Quantum state transfer (QST) and entangled state generation (ESG) are important building blocks for modern quantum information processing. To achieve these tasks, convention wisdom is to consult the quantum adiabatic evolution, which is time-consuming, and thus is of low fidelity. Here, using the shortcut to adiabaticity technique, we propose a general method to realize high-fidelity fast QST and ESG in a cavity-coupled many qubits system via its dark pathways, which can be further designed for high-fidelity quantum tasks with different optimization purpose. Specifically, with a proper dark pathway, QST and ESG between any two qubits can be achieved without decoupling the others, which simplifies experimental demonstrations. Meanwhile, ESG among all qubits can also be realized in a single step. In addition, our scheme can be implemented in many quantum systems, and we illustrate its implementation on superconducting quantum circuits. Therefore, we propose a powerful strategy for selective quantum manipulation, which is promising in cavity coupled quantum systems and could find many convenient applications in quantum information processing.
