Quantum Rydberg Central Spin Model

doi:10.1103/PhysRevLett.123.183001

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	Quantum Rydberg Central Spin Model
	Ashida, Yuto 2; Shi, Tao 3; Schmidt, Richard ; Sadeghpour, H. R.; Cirac, J. Ignacio ; Demler, Eugene 1
刊名	PHYSICAL REVIEW LETTERS
	2019
卷号	123 期号:18 页码:183001
关键词	DYNAMICS
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.123.183001
英文摘要	We consider dynamics of a Rydberg impurity in a cloud of ultracold bosonic atoms in which the Rydberg electron undergoes spin-changing collisions with surrounding atoms. This system realizes a new type of quantum impurity problems that compounds essential features of the Kondo model, the Bose polaron, and the central spin model. To capture the interplay of the Rydberg-electron spin dynamics and the orbital motion of atoms, we employ a new variational method that combines an impurity-decoupling transformation with a Gaussian ansatz for the bath particles. We find several unexpected features of this model that are not present in traditional impurity problems, including interaction-induced renormalization of the absorption spectrum that eludes simple explanations from molecular bound states, and long-lasting oscillations of the Rydberg-electron spin. We discuss generalizations of our analysis to other systems in atomic physics and quantum chemistry, where an electron excitation of high orbital quantum number interacts with a spinful quantum bath.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27075]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Sadeghpour, H. R.] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA 2.Univ Tokyo, Dept Appl Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan 3.Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan 4.Chinese Acad Sci, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 5.Harvard Univ, Dept Phys, Cambridge, MA 02138 USA 6.Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany 7.MCQST, Schellingstr 4, D-80799 Munich, Germany
推荐引用方式 GB/T 7714	Ashida, Yuto,Shi, Tao,Schmidt, Richard,et al. Quantum Rydberg Central Spin Model[J]. PHYSICAL REVIEW LETTERS,2019,123(18):183001.
APA	Ashida, Yuto,Shi, Tao,Schmidt, Richard,Sadeghpour, H. R.,Cirac, J. Ignacio,&Demler, Eugene.(2019).Quantum Rydberg Central Spin Model.PHYSICAL REVIEW LETTERS,123(18),183001.
MLA	Ashida, Yuto,et al."Quantum Rydberg Central Spin Model".PHYSICAL REVIEW LETTERS 123.18(2019):183001.