Results 11 to 20 of about 19,046 (299)
Photonics, 2022 Using the two-dimensional nonlinear Schrödinger equation, the collapse dynamics of vortex beams in a Kerr medium with refractive index modulation and parity–time (PT) symmetric lattices are explored. The critical power for the collapse of vortex beams in
Gang Yao, Yuhua Li, Rui-Pin Chen
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The manipulation of ultracold atoms of high orbitals in optical lattices
Frontiers in Physics, 2022 Ultracold atoms in optical lattices are a powerful tool for quantum simulation, precise measurement, and quantum computation. A fundamental problem in applying this quantum system is how to manipulate the higher bands or orbitals in Bloch states ...
Shengjie Jin, Xuzong Chen, Xiaoji Zhou
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The optical potential on the lattice [PDF]
Journal of High Energy Physics, 2016 The extraction of hadron-hadron scattering parameters from lattice data by using the Lüscher approach becomes increasingly complicated in the presence of inelastic channels. We propose a method for the direct extraction of the complex hadron-hadron optical potential on the lattice, which does not require the use of the multi-channel Lüscher formalism ...
Agadjanov, Dimitri +4 more
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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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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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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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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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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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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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