Results 71 to 80 of about 385,547 (172)

Density Modulations of Zero Sound

open access: yesAnnalen 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

A Quantum Degenerate Mixture of $^{87}$Rb and $^{133}$Cs [PDF]

open access: yes, 2011
This thesis reports the formation of a dual-species Bose-Einstein condensate of $^{87}$Rb and $^{133}$Cs in the same trapping potential. Quantum degenerate mixtures exhibit rich physics inaccessible to single species experiments and provide an ideal ...
MCCARRON, DANIEL,JOHN
core  

Realization of the Harper Hamiltonian with Ultracold Atoms in Optical Lattices [PDF]

open access: yes, 2014
We experimentally realized the Harper Hamiltonian with charge neutral, ultracold atoms in optical lattices using laser-assisted tunneling and a potential energy gradient.
Ketterle, Wolfgang   +9 more
core   +1 more source

Engineering thermal reservoirs for ultracold dipole–dipole-interacting Rydberg atoms

open access: yesNew Journal of Physics, 2018
We consider an open quantum system of ultracold Rydberg atoms. The system part consists of resonant dipole–dipole-interacting Rydberg states. The environment part is formed by ‘three-level atoms’: each atom has a ground state, a short-lived excited state,
D W Schönleber   +2 more
doaj   +1 more source

Skyrmionic Polarization Textures in Structured Dielectric Planar Media

open access: yesNanophotonics, Volume 15, Issue 3, 12 February 2026.
Topological skyrmionic textures are typically associated with the structure of optical fields. This work demonstrates that they can also emerge from the optical response of structured metasurfaces. Through engineered light–matter interaction, polarization eigenstates acquire nontrivial topology, which can be mapped into the Chern‐insulator physics ...
Francesco Di Colandrea   +2 more
wiley   +1 more source

Hands-On Quantum Cryptography: Experimentation with the B92 Protocol Using Pulsed Lasers

open access: yesPhotonics
Quantum cryptography continues to be an area of significant research and educational interest. Here, a straightforward and reliable approach to both the experimental and theoretical aspects of quantum key distribution is presented, tailored for senior ...
Sara P. Gandelman   +2 more
doaj   +1 more source

Quantum gas microscopy of ytterbium: cool me twice

open access: yesNew Journal of Physics, 2016
The site-resolved detection of ultracold atoms in optical lattice potentials is a powerful technique to study lattice models of correlated quantum matter. In their recent paper, Yamamoto et al (2016 New J. Phys.
Mukund Vengalattore
doaj   +1 more source

Exotic Chemistry with Ultracold Rydberg Atoms

open access: yesCHIMIA, 2016
We review recent experiments carried out with dense (1012 cm–3) ultracold (T = 40 ?K) samples of Cs atoms which have the goal to characterize, by high-resolution spectroscopy, the interactions between Cs atoms, Cs+ ions and electrons that lead ...
Heiner Saßmannshausen   +2 more
doaj   +1 more source

Advanced Electron Microscopy of Clusters Grown Inside Superfluid Helium Droplets: Advances, Challenges, and Perspectives

open access: yesSmall Structures, Volume 7, Issue 2, February 2026.
Superfluid helium nanodroplets enable ultraclean synthesis of metallic clusters and nanowires unattainable by other methods. This review surveys aberration‐corrected scanning transmission electron microscopy (STEM), electron energy loss spectroscopy (EELS)/energy‐dispersive X‐ray spectroscopy (EDX), and electron tomography to resolve their structure ...
Daniel Knez   +3 more
wiley   +1 more source

Sympathetic cooling of a membrane oscillator in a hybrid mechanical-atomic system [PDF]

open access: yes, 2014
The quantum behaviour of macroscopic mechanical oscillators is currently being investigated using a variety of mechanical systems and techniques such as optomechanical cooling and cold damping.
Jöckel, Andreas
core   +1 more source

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