Zobrazeno 1 - 10
of 32
pro vyhledávání: '"van Frank, Sandrine"'
Autor:
Felbermayer, Karoline1 (AUTHOR) sandrine.vanfrank@recendt.at, van Frank, Sandrine1 (AUTHOR) bettina.heise@recendt.at, Heise, Bettina1 (AUTHOR) markus.brandstetter@recendt.at, Brandstetter, Markus1 (AUTHOR) peter.burgholzer@recendt.at, Rankl, Christian1 (AUTHOR), Ladner, Harald2 (AUTHOR) harald.ladner@tckt.at, Burgholzer, Peter1 (AUTHOR)
Publikováno v:
Sensors (14248220). Oct2024, Vol. 24 Issue 19, p6367. 13p.
Autor:
Fosodeder, Peter, Hubmer, Simon, Ploier, Alexander, Ramlau, Ronny, van Frank, Sandrine, Rankl, Christian
A new approach for image reconstruction in THz computed tomography (THz-CT) is presented. Based on a geometrical optics model containing the THz signal amplitude and phase, a novel algorithm for extracting an average phase from the measured THz signa
Externí odkaz:
http://arxiv.org/abs/2102.08650
In this paper, we consider the imaging problem of terahertz (THz) tomography, in particular as it appears in non-destructive testing. We derive a nonlinear mathematical model describing a full THz tomography experiment, and consider linear approximat
Externí odkaz:
http://arxiv.org/abs/2010.14938
Autor:
van Frank, Sandrine
The feasibility of a simple and low-cost 3D time-of-flight imaging system isexperimentally investigated. Using a conventional CCD camera, a fast optoelectronic shutter and a modulated light, the distance of an object in a scene is measured. The measu
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32100
Autor:
Berrada, Tarik, van Frank, Sandrine, Bücker, Robert, Schumm, Thorsten, Schaff, Jean-François, Schmiedmayer, Jörg, Julía-Díaz, Bruno, Polls, Artur
Publikováno v:
Phys. Rev. A 93, 063620 (2016)
Interferometry with trapped atomic Bose-Einstein condensates (BECs) requires the development of techniques to recombine the two paths of the interferometer and map the accumulated phase difference to a measurable atom number difference. We have imple
Externí odkaz:
http://arxiv.org/abs/1512.08127
Autor:
van Frank, Sandrine, Negretti, Antonio, Berrada, Tarik, Bücker, Robert, Montangero, Simone, Schaff, Jean-François, Schumm, Thorsten, Calarco, Tommaso, Schmiedmayer, Jörg
Publikováno v:
Nature Communications 5, 4009 (2014)
We demonstrate a two-pulse Ramsey-type interferometer for non-classical motional states of a Bose-Einstein condensate in an anharmonic trap. The control pulses used to manipulate the condensate wavefunction are obtained from Optimal Control Theory an
Externí odkaz:
http://arxiv.org/abs/1402.0377
Autor:
Berrada, Tarik, van Frank, Sandrine, Bücker, Robert, Schumm, Thorsten, Schaff, Jean-François, Schmiedmayer, Jörg
Publikováno v:
Nature Communications 4, 2077
Particle-wave duality enables the construction of interferometers for matter waves, which complement optical interferometers in precision measurement devices. This requires the development of atom-optics analogs to beam splitters, phase shifters, and
Externí odkaz:
http://arxiv.org/abs/1303.1030
Autor:
Bücker, Robert, Berrada, Tarik, van Frank, Sandrine, Schaff, Jean-François, Schumm, Thorsten, Schmiedmayer, Jörg, Jäger, Georg, Grond, Julian, Hohenester, Ulrich
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 46 104012 (2013)
We present theoretical and experimental results on high-fidelity transfer of a trapped Bose-Einstein condensate into its first vibrationally excited eigenstate. The excitation is driven by mechanical motion of the trap, along a trajectory obtained fr
Externí odkaz:
http://arxiv.org/abs/1212.4173
Autor:
Bücker, Robert, Hohenester, Ulrich, Berrada, Tarik, van Frank, Sandrine, Perrin, Aurélien, Manz, Stephanie, Betz, Thomas, Grond, Julian, Schumm, Thorsten, Schmiedmayer, Jörg
Publikováno v:
Phys. Rev. A 86, 013638 (2012)
We develop a model for parametric amplification, based on a density matrix approach, which naturally accounts for the peculiarities arising for matter waves: significant depletion and explicit time-dependence of the source state population, long inte
Externí odkaz:
http://arxiv.org/abs/1203.5357
This file contains additional algorithms, reconstructions and spectroscopic data of the used materials
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad7248935cb5721e279c01b024bee548