Open AccessSpin-noise spectrum in a pulse-modulated field
Author(s) -
Guiying Zhang,
Ya Wen,
Jian Qiu,
Kaifeng Zhao
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.390771
Subject(s) - physics , optics , noise (video) , spin (aerodynamics) , rubidium , pulse (music) , field (mathematics) , materials science , computer science , mathematics , potassium , artificial intelligence , detector , pure mathematics , metallurgy , image (mathematics) , thermodynamics
We measure the spin noise spectrum (SNS) of a thermal Rubidium vapor in a pulse-modulated transverse magnetic field and develop a simple theory to describe the main structure of the SNS. Notably, when the pulse area is equal to π, the SNS consists of resonances centered at half-odd-integer multiples of the modulation frequency, while revealing the spin dynamics of the system in a zero field. Our study opens a promising way of studying zero-field spin dynamics by spin noise spectrum free from any low-frequency environmental disturbances.