Results 11 to 20 of about 88,877 (264)

Rectifying Fluctuations in an Optical Lattice [PDF]

Physical Review Letters, 2004
We have realized a Brownian motor by using cold atoms in a dissipative optical lattice as a model system. In our experiment the optical potential is spatially symmetric and the time-symmetry of the system is broken by applying appropriate zero-mean ac forces. We identify a regime of rectification of forces and a regime of rectification of fluctuations,
Jones, PH, Goonasekera, M, Renzoni, F
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Feasibility Study for a Chemical Process Particle Size Characterization System for Explosive Environments Using Low Laser Power

Micromachines, 2020
The industrial particle sensor market lacks simple, easy to use, low cost yet robust, safe and fast response solutions. Towards development of such a sensor, for in-line use in micro channels under continuous flow conditions, this work introduces static ...
Jesse Ross-Jones, Tobias Teumer, Susann Wunsch, Lukas Petri, Hermann Nirschl, Mathias J. Krause, Frank-Jürgen Methner, Matthias Rädle   +7 more
doaj   +1 more source

Dipolar Molecules in Optical Lattices [PDF]

Physical Review Letters, 2012
We study the extended Bose--Hubbard model describing an ultracold gas of dipolar molecules in an optical lattice, taking into account all on-site and nearest-neighbor interactions, including occupation-dependent tunneling and pair tunneling terms. Using exact diagonalization and the multiscale entanglement renormalization ansatz, we show that these ...
Sowiński, Tomasz, Dutta, Omjyoti, Hauke, Philipp, Tagliacozzo, Luca, Lewenstein, Maciej   +4 more
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Optical lattice on an atom chip [PDF]

Optics Letters, 2009
Optical dipole traps and atom chips are two very powerful tools for the quantum manipulation of neutral atoms. We demonstrate that both methods can be combined by creating an optical lattice potential on an atom chip. A red-detuned laser beam is retro-reflected using the atom chip surface as a high-quality mirror, generating a vertical array of purely ...
Gallego, D., Hofferberth, S., Schumm, T., Krüger, P., Schmiedmayer, J.   +4 more
openaire   +3 more sources

Anyonic braiding in optical lattices [PDF]

Proceedings of the National Academy of Sciences, 2007
Topological quantum states of matter, both Abelian and non-Abelian, are characterized by excitations whose wavefunctions undergo nontrivial statistical transformations as one excitation is moved (braided) around another. Topological quantum computation proposes to use the topological protection and the braiding statistics of a non-Abelian topological ...
Zhang, Chuanwei, Scarola, V. W., Tewari, Sumanta, Sarma, S. Das   +3 more
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Imbalanced antiferromagnet in an optical lattice [PDF]

Physical Review A, 2010
We study the rich properties of the imbalanced antiferromagnet in an optical lattice. We present its phase diagram, discuss spin waves and explore the emergence of topological excitations in two dimensions, known as merons, which are responsible for a Kosterlitz-Thouless transition that has never unambiguously been observed.
Koetsier, Arnaud, van Liere, F., Stoof, H. T. C.   +2 more
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Photoionization of Rydberg atoms in optical lattices

New Journal of Physics, 2021
We develop a formalism for photoionization (PI) and potential energy curves (PECs) of Rydberg atoms in ponderomotive optical lattices and apply it to examples covering several regimes of the optical-lattice depth.
R Cardman, J L MacLennan, S E Anderson, Y-J Chen, G Raithel   +4 more
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On the formation of antihydrogen beams using travelling optical lattices

New Journal of Physics, 2021
The production of beams of antihydrogen atoms using the dipole force provided by a travelling optical lattice to accelerate a sample of the anti-atoms held in a magnetic gradient atom trap is investigated.
N Madsen, M Charlton
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Electronic Structure and Optical Properties of Cu₂ZnSnS₄ under Stress Effect

Crystals, 2022
By using the pseudopotential plane-wave method of first principles based on density functional theory, the band structure, density of states and optical properties of Cu2ZnSnS4 under isotropic stress are calculated and analyzed.
Xiufan Yang, Xinmao Qin, Wanjun Yan, Chunhong Zhang, Dianxi Zhang, Benhua Guo   +5 more
doaj   +1 more source

Anderson lattice description of photoassociation in an optical lattice [PDF]

Physical Review A, 2006
We consider atomic mixtures of bosons and two-component fermions in an optical lattice potential. We show that if the bosons are in a Mott-insulator state with precisely one atom per lattice, the photoassociation of bosonic and fermionic atoms into heteronuclear fermionic molecules is described by the Anderson Lattice Model.
Miyakawa, Takahiko, Meystre, Pierre
openaire   +2 more sources