Results 111 to 120 of about 77,423 (235)
Direct observation of zitterbewegung in a Bose–Einstein condensate
New Journal of Physics, 2013 Zitterbewegung, a force-free trembling motion first predicted for relativistic fermions like electrons, was an unexpected consequence of the Dirac equation's unification of quantum mechanics and special relativity.
L J LeBlanc +6 more
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Probing magnetic order in ultracold lattice gases
, 2011 A forthcoming challenge in ultracold lattice gases is the simulation of quantum magnetism. That involves both the preparation of the lattice atomic gas in the desired spin state and the probing of the state. Here we demonstrate how a probing scheme based
De Chiara, G. +2 more
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Reconfigurable Photonic Lattices Based on Atomic Coherence
Advanced Physics Research, Volume 4, Issue 1, January 2025.Thermal atomic vapors are employed to effectively establish various instantaneously reconfigurable photonic lattices, with the assistance of electromagnetically induced transparency excited by a spatially periodic strong coupling field. Such electromagnetically induced photonic lattices with in situ tunability have served as a fertile ground for ...
Jiaqi Yuan +6 more
wiley +1 more source
New Journal of Physics, 2015 Quantum trapping potentials for ultracold gases change the landscape of classical properties of scattered light and matter. The atoms in a quantum many-body correlated phase of matter change the properties of light and vice versa.
Santiago F Caballero-Benitez +1 more
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Theory of Classical Electrodynamics with Topologically Quantized Singularities as Electric Charges
Laser &Photonics Reviews, Volume 19, Issue 2, January 22, 2025.A theory of classical electrodynamics, where the only admissible electric charges are quantized topological singularities, is formulated. The electric field is in this theory Berry curvature derived from the Berry connection, such that Gauss law is equivalent to the Chern theorem in topology.
Bruno Golik, Dario Jukić, Hrvoje Buljan
wiley +1 more source
Entanglement in dissipative dynamics of identical particles
, 2013 Entanglement of identical massive particles recently gained attention, because of its relevance in highly controllable systems, e.g. ultracold gases.
Marzolino, Ugo
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Two‐Time Quantum Fluctuations Approach and Its Relation to the Bethe–Salpeter Equation
physica status solidi (b), Volume 261, Issue 9, September 2024.The Bethe–Salpeter equation is combined with the generalized Kadanoff–Baym ansatz to derive a two‐time version of the GW approximation. This approximation is compared to the polarization approximation to show the relation between the two‐time fluctuations approach and the Bethe–Salpeter equation. Nonequilibrium results for the density response function
Erik Schroedter, Michael Bonitz
wiley +1 more source
Disorder and localization in ultracold quantum gases
, 2020 In this work we study Anderson localization of quantum states in different kind of disordered media. First we apply the recently-developed theory of \textit{landscape localization} pioneered by Filoche and Mayboroda, giving rise to an effective potential which yields further insight into localization. We analyze this problem numerically in one, two and
openaire +2 more sources
Microwave preparation of two-dimensional fermionic spin mixtures
New Journal of Physics, 2019 We present a method for preparing a single two-dimensional sample of a two-spin mixture of fermionic potassium in a single antinode of an optical lattice, in a quantum-gas microscope apparatus.
B Peaudecerf +4 more
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Light trapping in high-density ultracold atomic gases for quantum memory applications
, 2010 High-density and ultracold atomic gases have emerged as promising media for storage of individual photons for quantum memory applications. In this paper we provide an overview of our theoretical and experimental efforts in this direction, with particular
Beresteskii VB +6 more
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