Femtosecond two-photon Rabi oscillations in excited He driven by ultrashort intense laser fields

被引：0

作者：

Fushitani M. ^{[1
,2
]}

Liu C.-N. ^{[3
]}

Matsuda A. ^{[1
]}

Endo T. ^{[1
]}

Toida Y. ^{[1
]}

Nagasono M. ^{[2
]}

Togashi T. ^{[4
]}

Yabashi M. ^{[2
,4
]}

Ishikawa T. ^{[2
]}

Hikosaka Y. ^{[2
,5
]}

Morishita T. ^{[6
]}

Hishikawa A. ^{[1
,2
]}

机构：

[1] Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi

[2] RIKEN, SPring-8 Center, Sayo, Hyogo

[3] Department of Physics, Fu-Jen Catholic University, Taipei

[4] Japan Synchrotron Radiation Research Institute, Sayo, Hyogo

[5] Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama

[6] Department of Engineering Science, Institute for Advanced Science, University of Electro-Communications, 1-5-1 Chofu-ga-oka, Chofu, Tokyo

来源：

Nature Photonics | 2016年 / 10卷 / 2期

基金：

日本学术振兴会;

关键词：

D O I：

10.1038/nphoton.2015.228

中图分类号：

学科分类号：

摘要：

Coherent light-matter interaction provides powerful methods for manipulating quantum systems. Rabi oscillation is one such process. As it enables complete population transfer to a target state, it is thus routinely exploited in a variety of applications in photonics, notably quantum information processing. The extension of coherent control techniques to the multiphoton regime offers wider applicability, and access to highly excited or dipole-forbidden transition states. However, the multiphoton Rabi process is often disrupted by other competing nonlinear effects such as the a.c. Stark shift, especially at the high laser-field intensities necessary to achieve ultrafast Rabi oscillations. Here we demonstrate a new route to drive two-photon Rabi oscillations on timescales as short as tens of femtoseconds, by utilizing the strong-field phenomenon known as Freeman resonance. The scenario is not specific to atomic helium as investigated in the present study, but broadly applicable to other systems, thus opening new prospects for the ultrafast manipulation of Rydberg states. © 2016 Macmillan Publishers Limited. All rights reserved.

引用

页码：102 / 105

页数：3

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