Results 31 to 40 of about 385,547 (172)

Quantization of Polaritons Confined in Dielectric Structures

Laser &Photonics Reviews, EarlyView.
This study addresses the limitations of the Hopfield model of strong light‐matter coupling in the case of structured dieletrics. A method to derive quantum models in the polariton basis using Bogoliubov transformation and third quantization is introduced, demonstrating how to boost interaction strength and engineer nonlocal interactions for strongly ...
Amir Rahmani, Dogyun Ko, Maciej Dems, Andrzej Opala, Michał Matuszewski   +4 more
wiley   +1 more source

Suppressing dipolar relaxation in thin layers of dysprosium atoms

Nature Communications
The dipolar interaction can be attractive or repulsive, depending on the position and orientation of the dipoles. Constraining atoms to a plane with their magnetic moment aligned perpendicularly leads to a largely side-by-side repulsion and generates a ...
Pierre Barral, Michael Cantara, Li Du, William Lunden, Julius de Hond, Alan O. Jamison, Wolfgang Ketterle   +6 more
doaj   +1 more source

Ab Initio Path Integral Monte Carlo Study of the 2D Uniform Electron Liquid at Finite Temperatures: Structural Properties, Density Response and Roton‐Type Excitation

Annalen der Physik, Volume 538, Issue 9, September 2026.
Path integral Monte Carlo simulations are used to simulate the 2D electron gas over a broad range of densities and temperatures with very high accuracy. These results constitute a rigorous benchmark for other methods and approximations and uncover the existence of a roton‐type feature in the dynamic structure factor at strong electronic coupling ...
Tobias Dornheim, Fotios Kalkavouras, Paul Hamann, Zhandos A. Moldabekov, Jan Vorberger, Panagiotis Tolias   +5 more
wiley   +1 more source

Geometric squeezing of rotating quantum gases into the lowest Landau level

Comptes Rendus. Physique
The simulation of quantum Hall physics with rotating quantum gases is witnessing a revival due to recent experimental advances that enabled the observation of a Bose–Einstein condensate entirely contained in its lowest kinetic energy state, i.e.
Crépel, Valentin, Yao, Ruixiao, Mukherjee, Biswaroop, Fletcher, Richard, Zwierlein, Martin   +4 more
doaj   +1 more source

A measurement of the neutron to 199Hg magnetic moment ratio

Physics Letters B, 2014
The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result γn/γHg=3.8424574 ...
S. Afach, C.A. Baker, G. Ban, G. Bison, K. Bodek, M. Burghoff, Z. Chowdhuri, M. Daum, M. Fertl, B. Franke, P. Geltenbort, K. Green, M.G.D. van der Grinten, Z. Grujic, P.G. Harris, W. Heil, V. Hélaine, R. Henneck, M. Horras, P. Iaydjiev, S.N. Ivanov, M. Kasprzak, Y. Kermaïdic, K. Kirch, A. Knecht, H.-C. Koch, J. Krempel, M. Kuźniak, B. Lauss, T. Lefort, Y. Lemière, A. Mtchedlishvili, O. Naviliat-Cuncic, J.M. Pendlebury, M. Perkowski, E. Pierre, F.M. Piegsa, G. Pignol, P.N. Prashanth, G. Quéméner, D. Rebreyend, D. Ries, S. Roccia, P. Schmidt-Wellenburg, A. Schnabel, N. Severijns, D. Shiers, K.F. Smith, J. Voigt, A. Weis, G. Wyszynski, J. Zejma, J. Zenner, G. Zsigmond   +53 more
doaj   +1 more source

Quenching the Hubbard Model: Comparison of Nonequilibrium Green's Function Methods

Contributions to Plasma Physics, Volume 66, Issue 7-8, September 2026.
ABSTRACT We benchmark nonequilibrium Green's function (NEGF) approaches for interaction quenches in the half‐filled Fermi–Hubbard model in one and two dimensions. We compare fully self‐consistent two‐time Kadanoff–Baym equations (KBE), the generalized Kadanoff–Baym ansatz (GKBA), and the recently developed NEGF‐based quantum fluctuations approach (NEGF‐
Jan‐Philip Joost, Christopher Makait, Alexander Osterkorn, Erik Schroedter   +3 more
wiley   +1 more source

Multi-wavelength holography with a single spatial light modulator for ultracold atom experiments [PDF]

, 2015
The authors acknowledge funding from the Leverhulme Trust Research Project Grant RPG-2013-074 and from the EPSRC grant GR/T08272/01.We demonstrate a method to independently and arbitrarily tailor the spatial profile of light of multiple wavelengths and ...
Cassettari, Donatella, Bowman, David, Bruce, Graham D., Ireland, Philip   +3 more
core   +1 more source

Spin-momentum coupled Bose-Einstein condensates with lattice band pseudospins

Nature Communications, 2016
The optical trapping of ultracold atoms allows for the simulation and controlled exploration of phenomena normally found in condensed matter systems. Here, the authors demonstrate spin–orbit coupling between lattice band pseudospins in a Bose-Einstein ...
M. A. Khamehchi, Chunlei Qu, M. E. Mossman, Chuanwei Zhang, P. Engels   +4 more
doaj   +1 more source

Reweighting Scheme for the Calculation of Grand‐Canonical Expectation Values in Quantum Monte Carlo Simulations With a Fermion Sign Problem

Contributions to Plasma Physics, Volume 66, Issue 7-8, September 2026.
ABSTRACT Ab initio path integral Monte Carlo (PIMC) simulations constitute the gold standard for the estimation of a broad range of equilibrium properties of a host of interacting quantum many‐body systems spanning a broad range of conditions from ultracold atoms to warm dense quantum plasmas.
Paul Hamann, Jan Vorberger, Tobias Dornheim   +2 more
wiley   +1 more source

Feshbach spectroscopy of an ultracold Rb-Cs mixture [PDF]

, 2012
This thesis reports the observation of interspecies Feshbach resonances in an ultracold mixture of Rb and Cs atoms. A versatile combined magnetic and optical potential has been designed and constructed which is capable of bringing both $^{87}\rm{Rb}$ and
Jenkin, Daniel Lester, JENKIN, DANIEL,LESTER, Daniel L. Jenkin   +2 more
core