Search Results - "Griesmaier, Axel"
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Comparing contact and dipolar interactions in a Bose-Einstein condensate
Published in Physical review letters (22-12-2006)“…We have measured the relative strength epsilon dd of the magnetic dipole-dipole interaction compared with the contact interaction in a dipolar chromium…”
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2
Strong dipolar effects in a quantum ferrofluid
Published in Nature (09-08-2007)“…Symmetry-breaking interactions have a crucial role in many areas of physics, ranging from classical ferrofluids to superfluid 3He and d-wave superconductivity…”
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3
Bose-einstein condensation of chromium
Published in Physical review letters (29-04-2005)“…We report on the generation of a Bose-Einstein condensate in a gas of chromium atoms, which have an exceptionally large magnetic dipole moment and therefore…”
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4
High efficiency demagnetization cooling by suppression of light-assisted collisions
Published in Optics express (09-03-2015)“…Demagnetization cooling utilizes dipolar relaxations that couple the internal degree of freedom (spin) to the external (angular momentum) in order to cool an…”
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5
Continuous loading of a conservative potential trap from an atomic beam
Published in Physical review letters (22-04-2011)“…We demonstrate the fast accumulation of 52Cr atoms in a conservative potential from a guided atomic beam. Without laser cooling on a cycling transition, a…”
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6
Driving dipolar fermions into the quantum Hall regime by spin-flip induced insertion of angular momentum
Published in Physical review letters (05-04-2013)“…A new method to drive a system of neutral dipolar fermions into the lowest Landau level regime is proposed. By employing adiabatic spin-flip processes in…”
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7
Magnetostriction in a degenerate quantum gas
Published in Journal of magnetism and magnetic materials (01-09-2007)“…We have investigated magnetic dipole–dipole interaction in a gas of Bose–Einstein condensed chromium atoms. The shape of the gaseous cloud within the atom trap…”
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Journal Article Conference Proceeding -
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Ultracold chromium atoms: from Feshbach resonances to a dipolar Bose-Einstein condensate
Published in Journal of modern optics (20-03-2007)“…We report on experiments with ultracold chromium atoms. Preparing a cloud of 52 Cr atoms in a crossed optical dipole trap (CODT) and applying magnetic fields…”
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Journal Article Conference Proceeding -
9
Efficient demagnetization cooling of atoms and its limits
Published in Physical review. A, Atomic, molecular, and optical physics (17-04-2014)Get full text
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10
A two species trap for chromium and rubidium atoms
Published in Journal of modern optics (01-08-2004)“…We realize a combined trap for bosonic chromium ( 52 Cr) and rubidium ( 87 Rb) atoms. Initial experiments focus on exploring a suitable loading scheme for the…”
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Journal Article Conference Proceeding -
11
Evaporation-limited loading of an atomic trap
Published in Physical review. A, Atomic, molecular, and optical physics (21-02-2012)“…Recently, we have experimentally demonstrated a continuous loading mechanism for an optical dipole trap from a guided atomic beam [M. Falkenau, V. V. Volchkov,…”
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12
Efficient demagnetization cooling of atoms and its limits
Published 25-05-2014“…Phys. Rev. A 89, 043417(2014) Demagnetization cooling relies on spin-orbit coupling that brings motional and spin degrees of freedom into thermal equilibrium…”
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13
Sisyphus cooling in a continuously loaded trap
Published 07-06-2013“…New J. Phys. 15 093012 (2013) We demonstrate continuous Sisyphus cooling combined with a continuous loading mechanism used to efficiently slow down and…”
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14
Driving Dipolar Fermions into the Quantum Hall Regime by Spin-Flip Induced Insertion of Angular Momentum
Published 03-04-2013“…Phys. Rev. Lett. 110, 145303 (2013) A new method to drive a system of neutral dipolar fermions into the lowest Landau level regime is proposed. By employing…”
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15
Evaporation limited loading of an atom trap
Published 28-02-2012“…Phys. Rev. A 85, 023412 (2012) Recently, we have experimentally demonstrated a continuous loading mechanism for an optical dipole trap from a guided atomic…”
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16
A proposal for continuous loading of an optical dipole trap with magnetically guided ultra cold atoms
Published 11-12-2009“…A Aghajani-Talesh et al, J. Phys. B: At. Mol. Opt. Phys. 42 (2009) 245302 The capture of a moving atom by a non-dissipative trap, such as an optical dipole…”
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17
Continuous Loading of a Conservative Trap from an Atomic Beam
Published 04-02-2011“…We demonstrate the fast accumulation of Cr atoms in a conservative potential from a magnetically guided atomic beam. Without laser cooling on a cycling…”
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18
Production of a chromium Bose-Einstein condensate
Published 18-08-2005“…Appl. Phys. B, 82, 211 - 216 (2006) The recent achievement of Bose-Einstein condensation of chromium atoms [1] has opened longed-for experimental access to a…”
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19
In-Situ Dual-Port Polarization Contrast Imaging of Faraday Rotation in a High Optical Depth Ultracold 87Rb Atomic Ensemble
Published 03-09-2012“…We study the effects of high optical depth and density on the performance of a light-atom quantum interface. An in-situ imaging method, a dual-port…”
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20
Laser cooling of a magnetically guided ultra cold atom beam
Published 01-02-2010“…We report on the transverse laser cooling of a magnetically guided beam of ultra cold chromium atoms. Radial compression by a tapering of the guide is employed…”
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