Results 51 to 60 of about 32,417 (187)

Critical Limitations in Cryogenic Laser Cooling of Solids: Symmetry‐Related Fluorescence Trapping and Condensation‐Induced Parasitic Heating

Advanced Science, EarlyView.
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, Jiayi Zhang, Haodong Yang, Lianzhong Deng, Mauro Tonelli, Ercang Luo   +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

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

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

Feshbach resonances in ultracold K(39)

, 2007
We discover several magnetic Feshbach resonances in collisions of ultracold K(39) atoms, by studying atom losses and molecule formation. Accurate determination of the magnetic-field resonance locations allows us to optimize a quantum collision model for ...
Andrea Simoni, Chiara D'Errico, Giacomo Roati, Giovanni Modugno, Goral K, Marco Fattori, Massimo Inguscio, Matteo Zaccanti, Roati G Zaccanti M D'Errico C Catani J Simoni A Modugno M Inguscio M Modugno G, Smirnov B M, Tiesinga E   +10 more
core   +2 more sources

Optical Clock with Ultracold Neutral Atoms [PDF]

Physical Review Letters, 2002
4 pages, 3 ...
Wilpers, G., Binnewies, T., Degenhardt, C., Sterr, U., Helmcke, J., Riehle, F.   +5 more
openaire   +3 more sources

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

Contributions to Plasma Physics, EarlyView.
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

Observation of Linear and Nonlinear Light Trapping on Topological Dislocations

Laser &Photonics Reviews, EarlyView.
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, A. V. Kireev, K. Sabour, N. S. Kostyuchenko, S. A. Zhuravitskii, N. N. Skryabin, I. V. Dyakonov, A. A. Kalinkin, V. O. Kompanets, S. P. Kulik, S. V. Chekalin, A. Ferrando, V. N. Zadkov, Y. V. Kartashov   +13 more
wiley   +1 more source

Coherent transfer of photoassociated molecules into the rovibrational ground state

, 2010
We report on the direct conversion of laser-cooled 41K and 87Rb atoms into ultracold 41K87Rb molecules in the rovibrational ground state via photoassociation followed by stimulated Raman adiabatic passage.
D. Akamatsu, J. Kobayashi, K. Aikawa, K. Oasa, M. Hayashi, M. Ueda, P. Naidon, R. V. Krems, S. Inouye, T. Kishimoto   +9 more
core   +1 more source

Density Modulations of Zero Sound

Annalen der Physik, Volume 538, Issue 2, February 2026.
Zero sound is a collective mode of the strongly interacting quantum gas that propagates when atomic collisions are negligible, similarly to a plasmon. This work aims at investigating the conditions under which a density modulation associated to this collective mode travels coherently through a strongly interacting Fermi gas.
Leonardo Pisani
wiley   +1 more source