Browsing by Subject "Bose-Einstein condensate"

Browsing by Subject "Bose-Einstein condensate"

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  • The Bose-Einstein Condensate and Cold Atom Laboratory 
    Frye, Kai; Abend, Sven; Bartosch, Wolfgang; Bawamia, Ahmad; Becker, Dennis; Blume, Holger; Braxmaier, Claus; Chiow, Sheng-Wey; Efremov, Maxim A.; Ertmer, Wolfgang; Fierlinger, Peter; Franz, Tobias; Gaaloul, Naceur; Grosse, Jens; Grzeschik, Christoph; Hellmig, Ortwin; Henderson, Victoria A.; Herr, Waldemar; Israelsson, Ulf; Kohel, James; Krutzik, Markus; Kürbis, Christian; Lämmerzahl, Claus; List, Meike; Lüdtke, Daniel; Lundblad, Nathan; Marburger, J. Pierre; Meister, Matthias; Mihm, Moritz; Müller, Holger; Müntinga, Hauke; Nepal, Ayush M.; Oberschulte, Tim; Papakonstantinou, Alexandros; Perovs̆ek, Jaka; Peters, Achim; Prat, Arnau; Rasel, Ernst M.; Roura, Albert; Sbroscia, Matteo; Schleich, Wolfgang P.; Schubert, Christian; Seidel, Stephan T.; Sommer, Jan; Spindeldreier, Christian; Stamper-Kurn, Dan; Stuhl, Benjamin K.; Warner, Marvin; Wendrich, Thijs; Wenzlawski, André; Wicht, Andreas; Windpassinger, Patrick; Yu, Nan; Wörner, Lisa (Berlin : Springer Nature, 2021)
    Microgravity eases several constraints limiting experiments with ultracold and condensed atoms on ground. It enables extended times of flight without suspension and eliminates the gravitational sag for trapped atoms. These ...
  • Compact, low-noise current drivers for quantum sensors with atom chips 
    Popp, Manuel André (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Quantum sensors based on atomic interferometry are becoming valued tools for precision measurements in various research areas such as metrology, Earth sciences and inertial sensors. However, the verification of their ...
  • Creation of entangled atomic states by an analogue of the Dynamical Casimir effect 
    Lange, K.; Peise, J.; Luecke, B.; Gruber, T.; Sala, A.; Polls, A.; Ertmer, Wolfgang; Julia-Diaz, B.; Santos, L.; Klempt, C. (Bristol : Institute of Physics Publishing (IOP), 2018)
    If the boundary conditions of the quantum vacuum are changed in time, quantum field theory predicts that real, observable particles can be created in the initially empty modes. Here, we realize this effect by changing the ...
  • Diffractive focusing of a uniform Bose-Einstein condensate 
    Boegel, Patrick; Meister, Matthias; Siemß, Jan-Niclas; Gaaloul, Naceur; Efremov, Maxim A.; Schleich, Wolfgang P. (Bristol : IOP Publ., 2021)
    We propose a straightforward implementation of the phenomenon of diffractive focusing with uniform atomic Bose-Einstein condensates. Both, analytical as well as numerical methods not only illustrate the influence of the ...
  • A Dual-Species Atom Interferometer Payload for Operation on Sounding Rockets 
    Elsen, Michael; Piest, Baptist; Adam, Fabian; Anton, Oliver; Arciszewski, Paweł; Bartosch, Wolfgang; Becker, Dennis; Bleeke, Kai; Böhm, Jonas; Boles, Sören; Döringshoff, Klaus; Guggilam, Priyanka; Hellmig, Ortwin; Imwalle, Isabell; Kanthak, Simon; Kürbis, Christian; Koch, Matthias; Lachmann, Maike Diana; Mihm, Moritz; Müntinga, Hauke; Nepal, Ayush Mani; Oberschulte, Tim; Ohr, Peter; Papakonstantinou, Alexandros; Prat, Arnau; Reichelt, Christian; Sommer, Jan; Spindeldreier, Christian; Warner, Marvin; Wendrich, Thijs; Wenzlawski, André; Blume, Holger; Braxmaier, Claus; Lüdtke, Daniel; Peters, Achim; Rasel, Ernst Maria; Sengstock, Klaus; Wicht, Andreas; Windpassinger, Patrick; Grosse, Jens (Heidelberg : Springer, 2023)
    We report on the design and the construction of a sounding rocket payload capable of performing atom interferometry with Bose-Einstein condensates of 41 K and 87 Rb. The apparatus is designed to be launched in two consecutive ...
  • Entangled momentum modes for atom interferometry 
    Anders, Fabian (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2022)
    Entangled ensembles have been created in versatile atomic systems and find a promising application in entanglement-enhanced metrology. Here, entangled spin-states have been successfully applied within interferometers ...
  • Fast manipulation of Bose-Einstein condensates with an atom chip 
    Corgier, R.; Amri, S.; Herr, W.; Ahlers, H.; Rudolph, J.; Guéry-Odelin, D.; Rasel, Ernst Maria; Charron, E.; Gaaloul, Naceur (Bristol : Institute of Physics Publishing, 2018)
    We present a detailed theoretical analysis of the implementation of shortcut-to-adiabaticity protocols for the fast transport of neutral atoms with atom chips. The objective is to engineer transport ramps with durations ...
  • Interacting quantum mixtures for precision atom interferometry 
    Corgier, Robin; Loriani, Sina; Ahlers, Holger; Posso-Trujillo, Katerine; Schubert, Christian; Rasel, Ernst M.; Charron, Eric; Gaaloul, Naceur (Bristol : IOP Publishing Ltd., 2020)
    We present a source engineering concept for a binary quantum mixture suitable as input for differential, precision atom interferometry with drift times of several seconds. To solve the non-linear dynamics of the mixture, ...
  • Microgravity facilities for cold atom experiments 
    Raudonis, Matthias; Roura, Albert; Meister, Matthias; Lotz, Christoph; Overmeyer, Ludger; Herrmann, Sven; Gierse, Andreas; Lämmerzahl, Claus; Bigelow, Nicholas P.; Lachmann, Maike; Piest, Baptist; Gaaloul, Naceur; Rasel, Ernst M.; Schubert, Christian; Herr, Waldemar; Deppner, Christian; Ahlers, Holger; Ertmer, Wolfgang; R. Williams, Jason; Lundblad, Nathan; Wörner, Lisa (Philadelphia, PA : IOP Publishing, 2023)
    Microgravity platforms enable cold atom research beyond experiments in typical laboratories by removing restrictions due to the gravitational acceleration or compensation techniques. While research in space allows for ...
  • Multi-particle entanglement in a spinor Bose-Einstein condensate for quantum-enhanced interferometry 
    Lücke, Bernd (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2014)
    [no abstract]
  • Nichtklassische Zustände in Spinor-Bose-Einstein-Kondensaten 
    Scherer, Manuel (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2012)
    [no abstract]
  • Non-classical states of matter in spinor Bose-Einstein condensates 
    Peise, Jan Christopher (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2015)
    [no abstract]
  • Optical collisions in crossed beams and Bose-Einstein condensation in a microtrap 
    Figl, Cristina (Hannover : Universität, 2004)
    [no abstract]
  • Parametric Amplification of Vacuum Fluctuations in a Spinor Condensate 
    Klempt, Carsten; Topic, O.; Gebreyesus, G.; Scherer, M.; Henninger, T.; Hyllus, P.; Ertmer, Wolfgang; Santos, Luis; Arlt, Jan J. (College Park : American Physical Society, 2010)
    Parametric amplification of vacuum fluctuations is crucial in modern quantum optics, enabling the creation of squeezing and entanglement. We demonstrate the parametric amplification of vacuum fluctuations for matter waves ...
  • Eine Quelle Bose-Einstein-kondensierter Ensembles auf Basis eines mesokopischen Atomchips 
    Jöllenbeck, Stefan (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2012)
    [no abstract]
  • Resonante Spindynamik in Bose-Einstein-Kondensaten 
    Topić, Oliver (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2010)
    [no abstract]
  • The space atom laser: An isotropic source for ultra-cold atoms in microgravity 
    Meister, Matthias; Roura, Albert; Rasel, Ernst M.; Schleich, Wolfgang P. (Bristol : Institute of Physics Publishing, 2019)
    Atom laser experiments with Bose-Einstein condensates (BECs) performed in ground-based laboratories feature a coherent and directed beam of atoms which is accelerated by gravity. In microgravity the situation is fundamentally ...
  • Theoretical study of quantum gas experiments in an Earth-orbiting research laboratory 
    Pichery, Annie (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2024-04)
    One of the major goals of fundamental physics is to unify general relativity, which describes macroscopic phenomena driven by the influence of gravity, with quantum mechanics, which focuses on effects at microscopic scales. ...
  • Time-averaged optical potentials for creating and shaping Bose-Einstein condensates 
    Albers, Henning (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    The precision of atom interferometers, targeted for example in the Hannover Very Long Baseline Atom Interferometer (VLBAI) facility, imposes stringent requirements in several respects. They concern the control of ...
  • Two-mode entanglement in spin and spatial degrees of freedom 
    Lange, Karsten (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The predictions of quantum mechanics often differ from our everyday experiences. In the classical case, the state of a system can be predicted precisely, assuming the exact knowledge of all parameters. This is not possible ...