Alkali-Metal Spin Maser

被引：15

作者：

Chalupczak, W. ^{[1
]}

Josephs-Franks, P. ^{[1
]}

机构：

[1] Natl Phys Lab, Hampton Rd, Teddington TW11 0LW, Middx, England

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 03期

关键词：

QUANTUM; MAGNETOENCEPHALOGRAPHY; EXCHANGE; HE-3;

D O I：

10.1103/PhysRevLett.115.033004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum measurement is a combination of a read-out and a perturbation of the quantum system. We explore the nonlinear spin dynamics generated by a linearly polarized probe beam in a continuous measurement of the collective spin state in a thermal alkali-metal atomic sample. We demonstrate that the probe-beam-driven perturbation leads, in the presence of indirect pumping, to complete polarization of the sample and macroscopic coherent spin oscillations. As a consequence of the former we report observation of spectral profiles free from collisional broadening. Nonlinear dynamics is studied through exploring its effect on radio frequency as well as spin noise spectra.

引用

页数：5

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