Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Jørgensen, Nils B"'
Autor:
Skou, Magnus G., Nielsen, Kristian Knakkergaard, Skov, Thomas G., Morgen, Andreas M., Jørgensen, Nils B., Camacho-Guardian, Arturo, Pohl, Thomas, Bruun, Georg M., Arlt, Jan J.
Publikováno v:
Phys. Rev. Research 4, 043093 (2022)
Spectroscopic and interferometric measurements complement each other in extracting the fundamental properties of quantum many-body systems. While spectroscopy provides precise measurements of equilibrated energies, interferometry can elucidate the dy
Externí odkaz:
http://arxiv.org/abs/2204.01424
Publikováno v:
Phys. Rev. Lett. 126, 230404 (2021)
We observe monopole oscillations in a mixture of Bose-Einstein condensates, where the usually dominant mean-field interactions are canceled. In this case, the system is governed by the next-order Lee-Huang-Yang (LHY) correction to the ground state en
Externí odkaz:
http://arxiv.org/abs/2011.02745
Autor:
Skou, Magnus G., Skov, Thomas G., Jørgensen, Nils B., Nielsen, Kristian K., Camacho-Guardian, Arturo, Pohl, Thomas, Bruun, Georg M., Arlt, Jan J.
Publikováno v:
Nature Physics 17, 731-735 (2021)
Advancing our understanding of non-equilibrium phenomena in quantum many-body systems remains among the greatest challenges in physics. Here, we report on the experimental observation of a paradigmatic many-body problem, namely the non-equilibrium dy
Externí odkaz:
http://arxiv.org/abs/2005.00424
Publikováno v:
Phys. Rev. Lett. 121, 173403 (2018)
Understanding the effects of interactions in complex quantum systems beyond the mean-field paradigm constitutes a fundamental problem in physics. Here, we show how the atom numbers and interactions in a Bose-Bose mixture can be tuned to cancel mean-f
Externí odkaz:
http://arxiv.org/abs/1810.11339
Autor:
Wacker, Lars J., Jørgensen, Nils B., Skalmstang, Kristoffer T., Skou, Magnus G., Volosniev, Artem G., Arlt, Jan J.
Publikováno v:
Phys. Rev. A 98, 052706 (2018)
Ultracold atomic gases are an important testing ground for understanding few-body physics. In particular, these systems enable a detailed study of the Efimov effect. We use ultracold $^{39}\mathrm{K}$ to investigate the temperature dependence of an E
Externí odkaz:
http://arxiv.org/abs/1807.05001
Autor:
Lee, Kean Loon, Jørgensen, Nils B., Wacker, Lars J., Skou, Magnus G., Skalmstang, Kristoffer T., Arlt, Jan J., Proukakis, Nick P.
Ultracold quantum gases provide a unique setting for studying and understanding the properties of interacting quantum systems. Here, we investigate a multi-component system of $^{87}$Rb--$^{39}$K Bose-Einstein condensates (BECs) with tunable interact
Externí odkaz:
http://arxiv.org/abs/1712.07481
Autor:
Jørgensen, Nils B., Birkmose, Danny, Trelborg, Kristian, Wacker, Lars, Winter, Nils, Hilliard, Andrew J., Bason, Mark G., Arlt, Jan J.
Publikováno v:
Rev. Sci. Instrum. 87, 073106 (2016)
Frequency stabilization of laser light is crucial in both scientific and industrial applications. Technological developments now allow analog laser stabilization systems to be replaced with digital electronics such as field-programmable gate arrays,
Externí odkaz:
http://arxiv.org/abs/1607.02860
Autor:
Lee, Kean Loon, Jørgensen, Nils B., Liu, I-Kang, Wacker, Lars, Arlt, Jan J., Proukakis, Nick P.
Publikováno v:
Phys. Rev. A 94, 013602 (2016)
The miscibility of two interacting quantum systems is an important testing ground for the understanding of complex quantum systems. Two-component Bose-Einstein condensates enable the investigation of this scenario in a particularly well controlled se
Externí odkaz:
http://arxiv.org/abs/1604.08063
Autor:
Jørgensen, Nils B., Wacker, Lars, Skalmstang, Kristoffer T., Parish, Meera M., Levinsen, Jesper, Christensen, Rasmus S., Bruun, Georg M., Arlt, Jan J.
Publikováno v:
Phys. Rev. Lett. 117, 055302 (2016)
The problem of an impurity particle moving through a bosonic medium plays a fundamental role in physics. However, the canonical scenario of a mobile impurity immersed in a Bose-Einstein condensate (BEC) has not yet been realized. Here, we use radio f
Externí odkaz:
http://arxiv.org/abs/1604.07883
Steps towards implementing a collision based two-qubit gate in optical lattices have previously been realized by the parallel merging all pairs of atoms in a periodicity two superlattice. In contrast, we propose an architecture which allows for the m
Externí odkaz:
http://arxiv.org/abs/1402.2141