Results 31 to 40 of about 2,259,629 (235)

Optical Lattice with Torus Topology [PDF]

Physical Review Letters, 2018
We propose an experimental scheme to construct an optical lattice where the atoms are confined to the surface of a torus. This construction can be realized with spatially shaped laser beams which could be realized with recently developed high resolution imaging techniques.
Kim, Hwanmun, Zhu, Guanyu, Porto, J. V., Hafezi, Mohammad   +3 more
openaire   +3 more sources

Fractionalized topological defects in optical lattices

New Journal of Physics, 2015
Topological objects are interesting topics in various fields of physics ranging from condensed matter physics to the grand unified and superstring theories. Among those, ultracold atoms provide a playground to study the complex topological objects.
Xing-Hai Zhang, Wen-Jun Fan, Jin-Wei Shi, Su-Peng Kou   +3 more
doaj   +1 more source

A Simulation Study of the Dynamical Control of Optical Skyrmion Lattices through the Superposition of Optical Vortex Beams

Photonics, 2023
Optical skyrmion lattices play an important role in photonic system design and have potential applications in optical transmission and storage. In this study, we propose a novel metasurface approach to calculating the dependence of the multi-beam ...
Gao Tang, Chunyan Bai, Tianchen Tang, Jiansheng Peng, Songlin Zhuang, Dawei Zhang   +5 more
doaj   +1 more source

Optical lattices with micromechanical mirrors [PDF]

Physical Review A, 2010
We investigate a setup where a cloud of atoms is trapped in an optical lattice potential of a standing wave laser field which is created by retro-reflection on a micro-membrane. The membrane vibrations itself realize a quantum mechanical degree of freedom.
Hammerer, K., Stannigel, K., Genes, C., Wallquist, M., Zoller, P., Treutlein, P., Camerer, S., Hunger, D., Hänsch, T. W.   +8 more
openaire   +5 more sources

A disordered insulator in an optical lattice [PDF]

Nature Physics, 2010
Disorder can profoundly affect the transport properties of a wide range of quantum materials. Presently, there is significant disagreement regarding the effect of disorder on transport in the disordered Bose-Hubbard (DBH) model, which is the paradigm used to theoretically study disorder in strongly correlated bosonic systems.
Pasienski, M., McKay, D., White, M., DeMarco, B.   +3 more
openaire   +2 more sources

Peculiar effective optical anisotropy of planar isotropic lattices of sub-wavelength disks [PDF]

AIP Advances
Here, we demonstrate that the peculiar effective optical properties of planar lattices of nanoparticles clearly distinguish them from those typical for bulk crystals.
E. Bortchagovsky, F. Dai, M. Fleischer, D. R. T. Zahn   +3 more
doaj   +1 more source

Travelling solitary waves in the discrete nonlinear Schrodinger equation with saturable nonlinearity: existence, stability and dynamics [PDF]

, 2007
The present work examines in detail the existence, stability and dynamics of travelling solitary waves in dynamical lattices with saturable nonlinearity.
Melvin, TRO., Kevrekidis, PG., Cuevas, J., J. Cuevas, Cuevas-Maraver, Jesús, Cuevas, J, T.R.O. Melvin, Melvin, Thomas R.O., Kevrekidis, PG, Champneys, AR, Melvin, TRO, Champneys, A. R., P.G. Kevrekidis, Kevrekidis, Panayotis G., A.R. Champneys   +14 more
core   +1 more source

Non-diffracting optical Bloch oscillations in hexagonal photonic lattices

, 2017
Light beams undergoing optical Bloch oscillations (OBOs) in two-dimensional (2D) photonic lattices suffer from severe diffraction along the perpendicular direction to the oscillation plane.
Zhang, Peng, Rao, Bingjie, Liu, Sheng, Jianlin Zhao, Peng Zhang, Gan, Xuetao, Fajun Xiao, Sheng Liu, Xuetao Gan, Bingjie Rao, Wang, Meirong, Xiao, Fajun, Zhao, Jianlin, Meirong Wang   +13 more
core   +1 more source

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]

, 2007
The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core   +1 more source

Feshbach resonances in an optical lattice [PDF]

Physical Review A, 2005
We present the theory for ultracold atomic gases in an optical lattice near a Feshbach resonance. In the single-band approximation the theory describes atoms and molecules which can both tunnel through the lattice. Moreover, an avoided crossing between the two-atom and the molecular states occurs at every site.
Dickerscheid, D.B.M., Al-Khawaja, U., van Oosten, D., Stoof, H.T.C.   +3 more
openaire   +5 more sources