V2EX ac stark shift

AC Stark Shift

Definition / 释义

AC Stark shift(也常称 light shift,光移):指原子、分子或量子比特的能级在外加的交变电场/振荡光场(如激光)作用下发生的频率或能量偏移。它是 Stark 效应在交流(AC)场中的表现,在原子物理与量子光学中很常见。(在不同语境下还可能涉及近共振与远失谐两类情况。)

Pronunciation / 发音

/e si strk ft/

Examples / 例句

The AC Stark shift can change the measured transition frequency.
AC Stark shift 会改变测得的跃迁频率。

In precision spectroscopy, researchers carefully calibrate the laser intensity to minimize the AC Stark shift and reduce systematic error.
在高精度光谱实验中,研究人员会仔细标定激光强度以尽量减小 AC Stark shift,从而降低系统误差。

Etymology / 词源

Stark 来自 Stark effect(斯塔克效应),以德国物理学家 Johannes Stark(约翰内斯斯塔克)命名,描述外电场致的谱线/能级分裂或位移。ACalternating current(交流)的缩写,在这里泛指随时间振荡的电场(常见来源是激光的电场)。shift 表示“位移、偏移”。

Related Words / 相关词

Literary Works / 文学与著作

  • Laser Cooling and Trapping(Metcalf & van der Straten)讨论激光与原子相互作用时常涉及光移/AC Stark shift。
  • Atom-Photon Interactions(Cohen-Tannoudji, Dupont-Roc & Grynberg)系统介绍原子光子相互作用与相关能级位移。
  • Optical Coherence and Quantum Optics(Mandel & Wolf)在量子光学框架中涉及由光场引起的能级与频率偏移。
  • Quantum Optics(Scully & Zubairy)量子光学教材中常用该术语讨论有效哈密顿量与频移。
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