Results 11 to 20 of about 12,150 (260)
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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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 +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. +4 more
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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 +3 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 +4 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 +2 more
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An accordion superlattice for controlling atom separation in optical potentials
New Journal of Physics, 2023 We propose a method for separating trapped atoms in optical lattices by large distances. The key idea is the cyclic transfer of atoms between two lattices of variable spacing, known as accordion lattices, each covering at least a factor of two in lattice
Simon Wili +2 more
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Results in Physics, 2023 We have investigated the linear propagation of light wave in three-dimensional photonic quasicrystal lattices by numerical simulation. The diffraction characteristics of the light waves in the longitudinal non-modulated, in-phase modulated and out-of ...
Meng Song +3 more
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Synthetic band-structure engineering in polariton crystals with non-Hermitian topological phases
Nature Communications, 2020 To simulate band structures of solid state materials synthetic lattices are usually generated by optical lattices or by irreversible patterning the system.
L. Pickup +3 more
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Bound states in the continuum in subwavelength emitter arrays
Physical Review Research, 2023 Ordered lattices of emitters with subwavelength periodicities support unconventional forms of light-matter interactions arising from collective effects.
María Blanco de Paz, Paloma A. Huidobro
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