V2EX pauli matrix

Pauli Matrix

定义 Definition

Pauli matrix(泡利矩阵):量子力学中一组常用的 3 个 2×2 复矩阵(通常记作 σ、σ、σ),用来描述自旋 1/2体系与两能级系统的算符结构;它们是厄米矩阵幺正(除常数因子外)并满足特定对易/反对易关系。在物理中也常把它们与 单位矩阵 σ 一起作为基底使用。

例句 Examples

Pauli matrices are used to describe electron spin.
泡利矩阵用于描述电子自旋。

In quantum computing, any single-qubit operator can be expanded using the identity and the Pauli matrices.
在量子计算中,任意单量子比特算符都可以用单位矩阵与泡利矩阵展开表示。

发音 Pronunciation

/pali metrks/

词源 Etymology

“Pauli” 来自奥地利物理学家 Wolfgang Pauli(沃尔夫冈泡利) 的姓氏;“matrix” 源自拉丁语 matrix(本义与“母体/来源”相关),在数学中引申为“矩阵”。“Pauli matrix” 因其在泡利关于自旋理论与量子力学形式体系中的关键作用而得名。

相关词 Related Words

文学与著作 Literary Works

  • The Principles of Quantum Mechanics Paul A. M. Dirac
  • Modern Quantum Mechanics J. J. Sakurai, Jim Napolitano
  • Introduction to Quantum Mechanics David J. Griffiths, Darrell F. Schroeter
  • Quantum Computation and Quantum Information Michael A. Nielsen, Isaac L. Chuang
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