arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2110.03099quant-ph
收藏

相互无偏量子观测量

Mutually Unbiased Quantum Observables

Stan Gudder

摘要:

我们首先定义有限维希尔伯特空间上的互无偏(MU)观测量。我们还考虑了更一般的概念部分MU观测。讨论了MU观测量、值互补观测量和其它两个涉及观测量序列乘积的条件之间的关系。接下来,我们提出了一个特殊的激励情况下,MU观测称为有限的位置和动量观测。这些是通过有限傅立叶变换关联的原子可观测量。有限的位置和动量观测量给出的例子部分MU观测值是互补的,那些不是值互补的。涉及这些概念的各种开放的问题。这些问题主要涉及到将这一工作从锐可观测量扩展到非锐可观测量。

英文摘要:

We begin by defining mutually unbiased (MU) observables on a finite dimensional Hilbert space. We also consider the more general concept of parts of MU observables. The relationships between MU observables, value-complementary observables and two other conditions involving sequential products of observables are discussed. We next present a special motivating case of MU observables called finite position and momentum observables. These are atomic observables related by a finite Fourier transform. Finite position and momentum observables are employed to give examples of parts of MU observables that are value-complementary and those that are not value-complementary. Various open problems involving these concepts are presented. These problems mainly involve extending this work from sharp observables to unsharp observables.

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。

↑