Results 31 to 40 of about 2,670,241 (308)
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
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New Journal of Physics, 2018 We propose a general strategy for generating synthetic magnetic fields in complex lattices with non-trivial connectivity based on light–matter coupling in cold atomic gases. Our approach starts from an underlying optical flux lattice in which a synthetic
Gunnar Möller, Nigel R Cooper
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New Journal of Physics, 2023 We show that two seemingly unrelated problems—the trapping of an atom in an optical superlattice (OSL) and the libration of a planar rigid rotor in combined electric and optical fields (PR) – have isomorphic Hamiltonians.
Marjan Mirahmadi +3 more
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Frequency Ratio of 199Hg and 87Sr Optical Lattice Clocks beyond the SI Limit [PDF]
, 2015 We report on a frequency ratio measurement of a Hg199-based optical lattice clock referencing a Sr87-based clock. Evaluations of lattice light shift, including atomic-motion-dependent shift, enable us to achieve a total systematic uncertainty of 7.2×10 ...
Katori Hidetoshi +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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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. +8 more
openaire +5 more sources
Renormalisation of composite operators in lattice QCD: perturbative versus nonperturbative [PDF]
, 2010 The perturbative and nonperturbative renormalisation of quark-antiquark operators in lattice QCD with two flavours of clover fermions is investigated within the research programme of the QCDSF collaboration.
James Zanotti +21 more
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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. +3 more
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Using a GPS-Aided Inertial System for Coarse-Pointing of Free-Space Optical Communication Terminals [PDF]
, 2006 In the Capanina project, it has been shown that it is possible to use solely GPS positions for coarse-pointing of a stratospheric free-space optical communication terminal.
Bernhard Epple, Epple, Bernhard
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Ultracold atoms trapped in optical lattice [PDF]
, 2022 In this Thesis we study a paradigmatic experimental set up established for the study of quantum many-body system, namely ultracold atoms trapped in optical lattice.
Soriani, Luca
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