arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1803.08720quant-ph
收藏

不确定性关系的统一和加强框架

A Unified and Strengthened Framework for the Uncertainty Relation

Xiao Zheng, Shao-Qiang Ma, Guo-Feng Zhang, Heng Fan, Wu-Ming Liu

摘要:

通过构造统一的不确定性关系,我们为乘积形式和形式的方差不确定性关系提供了一个统一和加强的框架。在统一的框架下,我们推导出不相容观测量的不确定性不仅由其自身的交换子有界,而且由与另一个算子相关的量有界。该算子可以提供信息,使我们能够更准确地捕捉测量结果的不确定度,因此被命名为信息算子。信息算符的引入弥补了乘积形式和和形式测不准关系的不足,为量子测不准关系提供了更精确的描述。统一框架还提出了一个新的解释的不确定性关系的非厄米算子;即,在广义交换子的新定义下,当非厄米算子的“可观测”二阶原点矩是广义不相容的时,它们不可能同时是任意小的.

英文摘要:

We provide a unified and strengthened framework for the product form and the sum form variance-based uncertainty relations by constructing a unified uncertainty relation. In the unified framework, we deduce that the uncertainties of the incompatible observables are bounded by not only the commutator of themselves, but also the quantities related with the other operator. This operator can provide information so that we can capture the uncertainty of the measurement result more accurately, and thus is named as the information operator. The introduction of the information operator can fix the deficiencies in both the product form and the sum form uncertainty relations, and provides a more accurate description of the quantum uncertainty relation. The unified framework also proposes a new interpretation of the uncertainty relation for non-Hermitian operators; i.e., the "observable" second-order origin moments of the non-Hermitian operators cannot be arbitrarily small at the same time when they are generalized-incompatible on the new definition of the generalized commutator.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑