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The steady state of a driven dense ensemble of two-level atoms is determined from the competition of coherent laser excitation and decay that acts in a correlated way on several atoms simultaneously. We show that the presence of this…

Quantum Physics · Physics 2014-10-16 B. Olmos , D. Yu , I. Lesanovsky

We demonstrate a bipartition technique using a super-lattice architecture to access correlations between alternating planes of a mesoscopic array of spin-3 chromium atoms trapped in a 3D optical lattice. Using this method, we observe that…

We have discovered a novel feature in the plasmon excitations for a pair of Coulomb-coupled non- concentric spherical two-dimensional electron gases (S2DEGs). Our results show that the plasmon excitations for such pairs depend on the…

Mesoscale and Nanoscale Physics · Physics 2014-02-04 Godfrey Gumbs , Andrii Iurov , Antonios Balassis , Danhong Huang

A strong effort will be dedicated in the coming years to extend the reach of ab initio nuclear-structure calculations to heavy doubly open-shell nuclei. In order to do so, the most efficient strategies to incorporate dominant many-body…

Three-body decay is a rare decay mode observed in a handful of unbound rare isotopes. The angular and energy correlations between emitted nucleons are of particular interest, as they provide invaluable information on the interplay between…

Nuclear Theory · Physics 2021-04-08 S. M. Wang , W. Nazarewicz

We demonstrate a general three-dimensional semiclassical model as a powerful technique for the study of correlated multi-electron escape in atoms driven by infrared laser pulses at intensities where electron-electron correlation prevails.…

Atomic Physics · Physics 2023-04-26 Agapi Emmanouilidou , Matthew Benjamin Peters , Georgios Petros Katsoulis

Fermionic alkaline-earth atoms have unique properties that make them attractive candidates for the realization of novel atomic clocks and degenerate quantum gases. At the same time, they are attracting considerable theoretical attention in…

Quantum Gases · Physics 2010-04-20 A. V. Gorshkov , M. Hermele , V. Gurarie , C. Xu , P. S. Julienne , J. Ye , P. Zoller , E. Demler , M. D. Lukin , A. M. Rey

Preparation, manipulation, and detection of strongly correlated states of quantum many body systems are among the most important goals and challenges of modern physics. Ultracold atoms offer an unprecedented playground for realization of…

Other Condensed Matter · Physics 2008-09-25 Kai Eckert , Oriol Romero-Isart , Mirta Rodriguez , Maciej Lewenstein , Eugene S. Polzik , Anna Sanpera

We investigate the photoassociation dynamics of exactly two laser-cooled $^{85}$Rb atoms in an optical tweezer and reveal fundamentally different behavior to photoassociation in many-atom ensembles. We observe non-exponential decay in our…

Atomic Physics · Physics 2021-03-03 M. Weyland , S. S. Szigeti , R. A. B. Hobbs , P. Ruksasakchai , L. Sanchez , M. F. Andersen

Smashing nuclei at ultrarelativistic speeds and analyzing the momentum distribution of outgoing debris provides a powerful method to probe the many-body properties of the incoming nuclear ground states. Within a perturbative description of…

Nuclear Theory · Physics 2025-04-04 Thomas Duguet , Giuliano Giacalone , Sangyong Jeon , Alexander Tichai

The quantum dynamics of a strongly driven, strongly coupled single-atom-cavity system is studied by evaluating time-dependent second- and third-order correlations of the emitted photons. The coherent energy exchange, first, between the atom…

With a classical ensemble model that including electron correlations during the whole ionization process, we investigated strong-field sequential double ionization of Ar by elliptically polarized pulses at the quantitative level. The…

Atomic Physics · Physics 2015-06-04 Yueming Zhou , Cheng Huang , Qing Liao , Peixiang Lu

The competition between electron localization and de-localization in Mott insulators underpins the physics of strongly-correlated electron systems. Photo-excitation, which re-distributes charge between sites, can control this many-body…

Strongly Correlated Electrons · Physics 2015-08-05 S. Wall , D. Brida , S. R. Clark , H. P. Ehrke , D. Jaksch , A. Ardavan , S. Bonora , H. Uemura , Y. Takahashi , T. Hasegawa , H. Okamoto , G. Cerullo , A. Cavalleri

We present the results of experimental studies of photon-negative ion interactions involving the dynamics of two electrons. Resonances associated with doubly excited states of Li^- and He^- have been observed using laser photodetachment…

Atomic Physics · Physics 2015-06-26 D. Hanstorp , G. Haeffler , A. E. Klinkmueller , U. Ljungblad , U. Berzinsh , I. Yu. Kiyan , D. J. Pegg

Many-body phenomena are ubiquitous in solids, as electrons interact with one another and the many excitations arising from lattice, magnetic, and electronic degrees of freedom. These interactions can subtly influence the electronic…

Mesoscale and Nanoscale Physics · Physics 2013-12-16 S. Grothe , S. Johnston , Shun Chi , P. Dosanjh , S. A. Burke , Y. Pennec

The ionization dynamics of a two-electron atom in an attosecond XUV-infrared pump-probe experiment is simulated by solving the time-dependent two-electron Schr\"odinger equation. A dramatic change of the double ionization (DI) yield with…

Atomic Physics · Physics 2010-11-29 S. Bauch , K. Balzer , M. Bonitz

This document provides detailed descriptions of data acquisition and data analysis in support of the accompanying Article, cond-mat/0610721: Observation of the two-channel Kondo effect. Some of the most intriguing problems in solid state…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. M. Potok , I. G. Rau , Hadas Shtrikman , Yuval Oreg , D. Goldhaber-Gordon

We present a general multi-component density functional theory in which electrons and nuclei are treated completely quantum mechanically, without the use of a Born-Oppenheimer approximation. The two fundamental quantities in terms of which…

Materials Science · Physics 2007-05-23 Thomas Kreibich , Robert van Leeuwen , E. K. U. Gross

Research on strongly correlated electron systems faces a fundamental challenge due to the complex nature of intrinsic many-body correlations. A key strategy to address this challenge lies in advancing experimental methods that can directly…

Strongly Correlated Electrons · Physics 2026-03-31 Yuehua Su , Guoya Zhang , Chao Zhang , Dezhong Cao

Recent experimental progress in the field of cavity quantum electrodynamics allows to study the regime of strong interaction between quantized light and complex matter systems. Due to the coherent coupling between photons and matter-degrees…

Quantum Physics · Physics 2021-02-24 Florian Buchholz