Diffraction and quantum control of wave functions in nonresonant two-photon absorption

doi:10.1088/1361-6455/aaae5d

	Diffraction and quantum control of wave functions in nonresonant two-photon absorption
	Li,Baihong 1,2; Pang,Huafeng 1; Wang,Doudou 1; Zhang,Tao 1; Dong,Ruifang 2; Li,Yongfang 3
刊名	Journal of Physics B: Atomic, Molecular and Optical Physics
	2018-03-05
卷号	51 期号:6
关键词	quantum diffraction two-photon absorption wave function Fresnel diffraction
ISSN号	0953-4075
DOI	10.1088/1361-6455/aaae5d
英文摘要	Abstract In this study, the nonresonant two-photon absorption process in a two-level atom, induced by a weak chirped pulse, is theoretically investigated in the frequency domain. An analytical expression of the wave function expressed by Fresnel functions is obtained, and the two-photon transition probability (TPTP) versus the integral bandwidth, spectral width, and chirp parameter is analyzed. The results indicate that the oscillation evolution of the TPTP result from quantum diffraction of the wave function, which can be explained by analogy with Fresnel diffraction from a wide slit in the spatial domain. Moreover, the ratio between the real and imaginary parts of the excited state wave function and, hence, the atomic polarization, can be controlled by the initial phase of the excitation pulse. In some special initial phase of the excitation pulse, the wave functions with purely real or imaginary parts can be obtained by measuring the population probability. This work provides a novel perspective for understanding the physical details of the interactions between atoms and chirped light pulses in the multiphoton process.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0953-4075-51-6-AAAE5D
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/10695]
专题	中国科学院国家授时中心
作者单位	1.College of Sciences, Xi’an University of Science and Technology, Xi’an 710054, People’s Republic of China 2.Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, People’s Republic of China 3.School of Physics and Information Technology, Shaanxi Normal University, Xi’an, 710062, People’s Republic of China
推荐引用方式 GB/T 7714	Li,Baihong,Pang,Huafeng,Wang,Doudou,et al. Diffraction and quantum control of wave functions in nonresonant two-photon absorption[J]. Journal of Physics B: Atomic, Molecular and Optical Physics,2018,51(6).
APA	Li,Baihong,Pang,Huafeng,Wang,Doudou,Zhang,Tao,Dong,Ruifang,&Li,Yongfang.(2018).Diffraction and quantum control of wave functions in nonresonant two-photon absorption.Journal of Physics B: Atomic, Molecular and Optical Physics,51(6).
MLA	Li,Baihong,et al."Diffraction and quantum control of wave functions in nonresonant two-photon absorption".Journal of Physics B: Atomic, Molecular and Optical Physics 51.6(2018).