.png){kind=icon}
返回
Observing crossover between quantum speed limits
.png){kind=icon}
OA
AI
DOI：10.1126/sciadv.abj9119.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Quantum mechanics sets fundamental limits on how fast quantum states can be transformed in time. Two well-known quantum speed limits are the Mandelstam-Tamm and the Margolus-Levitin bounds, which relate the maximum speed of evolution to the system's energy uncertainty and mean energy, respectively. Here, we test concurrently both limits in a multilevel system by following the motion of a single atom in an optical trap using fast matter wave interferometry. We find two different regimes: one where the Mandelstam-Tamm limit constrains the evolution at all times, and a second where a crossover to the Margolus-Levitin limit occurs at longer times. We take a geometric approach to quantify the deviation from the speed limit, measuring how much the quantum evolution deviates from the geodesic path in the Hilbert space of the multilevel system. Our results are important to understand the ultimate performance of quantum computing devices and related advanced quantum technologies.
Keyword:
MAXIMUM SPEED
MIXED STATES
GEOMETRY
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
12.5
论文数:
2.1W
被引数:
18.1W
机构
引用论文
.png){kind=icon}
Design of an Automated System to Accelerate the Electrolyte Distribution in Lithium-Ion Batteries
PREAI
分享收藏
查看更多内容