Results 61 to 70 of about 385,547 (172)
Cooperative Optical Non-linearity in a blockaded Rydberg Ensemble [PDF]
, 2011 This thesis describes the observation of a novel optical non-linearity mediated by the dipole-dipole interactions in a cold gas of Rydberg atoms. Electromagnetically induced transparency (EIT) is used to map the strong dipolar interactions onto an ...
Pritchard, Jonathan David +2 more
core +1 more source
Prospects for Studies of the Free Fall and Gravitational Quantum States of Antimatter
Advances in High Energy Physics, 2015 Different experiments are ongoing to measure the effect of gravity on cold neutral antimatter atoms such as positronium, muonium, and antihydrogen.
G. Dufour +8 more
doaj +1 more source
Advanced Science, Volume 13, Issue 19, 2 April 2026.This study uncovers two overlooked bottlenecks in cryogenic laser cooling of solids: symmetry‐driven fluorescence trapping and water vapor condensation. We demonstrate that breaking sample symmetry enhances fluorescence escape, while condensation dominates parasitic heating below 135 K.
Biao Zhong +5 more
wiley +1 more source
Observation of Magnetically Induced Trap Loss of Ultracold Thulium Atoms
EPJ Web of Conferences, 2015 We report the observation of influence of homogeneous magnetic field on an optical lattice losses of ultracold thulium atoms. The atomic cloud temperature was T = 15 mK. The dependence of trap population on a value of magnetic field has a broad resonance
Kalganova E.S. +8 more
doaj +1 more source
Observation of Linear and Nonlinear Light Trapping on Topological Dislocations
Laser &Photonics Reviews, Volume 20, Issue 8, 17 April 2026.Topological dislocations are global lattice defects found in various systems ranging from crystals to photonic lattices. This work reports the first observation at optical frequencies of linear modes with tunable localization bound to edge dislocations and their nonlinear counterparts ‐ dislocation solitons. These results reveal an intriguing interplay
S. K. Ivanov +13 more
wiley +1 more source
Strongly correlated ultracold bosons in an optical lattice [PDF]
, 2012 In this thesis, we have investigated strongly correlated bosonic gases in an optical lattice, mostly based on a bosonic version of dynamical mean field theory and its real-space extension. Emphasis is put on possible novel quantum phenomena of these many-
Li, Yongqiang
core
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Theory and applications of ultracold atoms in optical superlattices [PDF]
, 2008 Optical lattices make it possible to trap and coherently control large ensembles of ultracold atoms. They provide the possibility to create lattice potentials that mimic the structure of solid-state systems, and to control these potentials dynamically ...
Vaucher, Benoit, Vaucher, Benoit.
core +1 more source
Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States
Advanced Functional Materials, Volume 36, Issue 21, 12 March 2026.This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu +3 more
wiley +1 more source
Clock spectroscopy of interacting bosons in deep optical lattices
New Journal of Physics, 2017 We report on high-resolution optical spectroscopy of interacting bosonic ^174 Yb atoms in deep optical lattices with negligible tunneling. We prepare Mott insulator phases with singly- and doubly-occupied isolated sites and probe the atoms using an ultra-
R Bouganne +5 more
doaj +1 more source