Induced THz transitions in Rydberg caesium atoms for application in antihydrogen experiments

被引：2
|
作者：
Vieille-Grosjean, M. [1 ]
Dimova, E. [2 ]
Mazzotta, Z. [1 ,4 ]
Comparat, D. [1 ]
Wolz, T. [3 ]
Malbrunot, C. [3 ]
机构：
[1] Univ Paris Saclay, CNRS, Lab Aime Cotton, F-91405 Orsay, France
[2] Bulgarian Acad Sci, Inst Solid State Phys, 72 Tzarigradsko Chaussee Blvd, Sofia 1784, Bulgaria
[3] Dept Phys, CERN, CH-1211 Geneva 23, Switzerland
[4] Adv Res Ctr Nanolithog ARCNL, Sci Pk 106, NL-1098 XG Amsterdam, Netherlands
来源：
EUROPEAN PHYSICAL JOURNAL D | 2021年 / 75卷 / 01期
关键词：
WAVE-FORM SYNTHESIS; LASER;
D O I：
10.1140/epjd/s10053-020-00013-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Antihydrogen atoms are produced at CERN in highly excited Rydberg states. However, precision measurements require anti-atoms in ground state. Whereas experiments currently rely on spontaneous emission only, simulations have shown that THz light can be used to stimulate the decay towards ground state and thus increase the number of anti-atoms available for measurements. We review different possibilities at hand to generate light in the THz range required for the purpose of stimulated deexcitation. We demonstrate the effect of a blackbody type light source, which however presents drawbacks for this application including strong photoionization. Further, we report on the first THz transitions in a beam of Rydberg caesium atoms induced by photomixers and conclude with the implications of the results for the antihydrogen case.Graphic abstract
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页数：8
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