Observation of Vacuum-Induced Collective Quantum Beats

被引：15

作者：

Han, Hyok Sang ^{[1
,2
]}

Lee, Ahreum ^{[1
,2
]}

Sinha, Kanupriya ^{[3
,6
]}

Fatemi, Fredrik K. ^{[4
,5
]}

Rolston, S. L. ^{[1
,2
,5
]}

机构：

[1] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA

[2] NIST, College Pk, MD 20742 USA

[3] Princeton Univ, Dept Elect & Comp Engn, Princeton, NJ 08544 USA

[4] US Army, Res Lab, Adelphi, MD 20783 USA

[5] Univ Maryland, Quantum Technol Ctr, College Pk, MD 20742 USA

[6] Arizona State Univ, Sch Elect Comp & Energy Engn, Tempe, AZ 85287 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 07期

关键词：

CORRELATED SPONTANEOUS-EMISSION; SCATTERING; RADIATION; SPECTROSCOPY; COHERENCE; PHOTON; LIGHT;

D O I：

10.1103/PhysRevLett.127.073604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate collectively enhanced vacuum-induced quantum beat dynamics from a three-level V-type atomic system. Exciting a dilute atomic gas of magneto-optically trapped Rb-85 atoms with a weak drive resonant on one of the transitions, we observe the forward-scattered field after a sudden shut-off of the laser. The subsequent radiative dynamics, measured for various optical depths of the atomic cloud, exhibits superradiant decay rates, as well as collectively enhanced quantum beats. Our work is also the first experimental illustration of quantum beats arising from atoms initially prepared in a single excited level as a result of the vacuum-induced coupling between excited levels.

引用

页数：6

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