期刊
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
卷 53, 期 12, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1751-8121/ab7498
关键词
quantum control; quantum information; speed limits
资金
- Program in Plasma Science and Technology at Princeton University
- DOE [DE-FG02-02ER15344]
- NSF [CHE-1763198]
- ARO [W911NF-19-1-0382]
We derive an upper bound for the time needed to implement a generic unitary transformation in a d dimensional quantum system using d control fields. We show that given the ability to control the diagonal elements of the Hamiltonian, which allows for implementing any unitary transformation under the premise of controllability, the time T needed is upper bounded by where is the smallest coupling constant present in the system. We study the tightness of the bound by numerically investigating randomly generated systems, with specific focus on a system consisting of d energy levels that interact in a tight-binding like manner.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据