论文标题
使用量子内存的量子控制
Quantum control using quantum memory
论文作者
论文摘要
我们提出了一种新的量子数值方案，以在二维时空网格中控制量子步行者的动力学。更具体地说，我们展示了如何为每个空间网格引入量子存储器，可以简单地通过对整个系统的初始状态作用来实现此结果，因此可以完全控制所有人。例如，我们在分析上证明了如何在初始状态中编码任何任意步行者的平均轨迹和方差。这使得在中期量子设备上实现动态有趣的物理模型的可能性大大接近，并引入了一个新的方向，以模拟量子场理论（QFTS）的各个方面，尤其是在弯曲的歧管上。
We propose a new quantum numerical scheme to control the dynamics of a quantum walker in a two dimensional space-time grid. More specifically, we show how, introducing a quantum memory for each of the spatial grid, this result can be achieved simply by acting on the initial state of the whole system, and therefore can be exactly controlled once for all. As example we prove analytically how to encode in the initial state any arbitrary walker's mean trajectory and variance. This brings significantly closer the possibility of implementing dynamically interesting physics models on medium term quantum devices, and introduces a new direction in simulating aspects of quantum field theories (QFTs), notably on curved manifold.
