论文标题
通过单身zeno样动力学之间的量子和经典计算之间的可调折衷
Tunable Tradeoff between Quantum and Classical Computation via Nonunitary Zeno-like Dynamics
论文作者
论文摘要
我们根据频繁的ZENO型测量值提出和分析连续时间Grover搜索算法的非单身变体。我们表明，通过在任意数据库大小和测量参数的效率上得出紧密的分析下限，该算法与纯量子版本相似。我们还研究算法的行为受噪声的影响，并发现在某些甲骨文和操作错误下，我们的基于测量的算法的表现优于标准算法，显示出针对这些噪声的鲁棒性。我们的分析是基于得出对算法的非炎性有效描述的，该描述对负责量子的量子和经典操作的组件有了更深入的了解。
We propose and analyze a nonunitary variant of the continuous time Grover search algorithm based on frequent Zeno-type measurements. We show that the algorithm scales similarly to the pure quantum version by deriving tight analytical lower bounds on its efficiency for arbitrary database sizes and measurement parameters. We also study the behavior of the algorithm subject to noise, and find that under certain oracle and operational errors our measurement-based algorithm outperforms the standard algorithm, showing robustness against these noises. Our analysis is based on deriving a non-hermitian effective description of the algorithm, which yields a deeper insight into components responsible for the quantum and the classical operation of the protocol.
