Zobrazeno 1 - 10
of 2 842
pro vyhledávání: '"A. Hemmerich"'
Autor:
Cosme, Jayson G., Kongkhambut, Phatthamon, Bölian, Anton, Tuquero, Richelle Jade L., Skulte, Jim, Mathey, Ludwig, Hemmerich, Andreas, Keßler, Hans
Using a quantum gas setup consisting of a Bose-Einstein condensate strongly coupled to a high-finesse optical cavity by a transverse pump laser, we experimentally observe an instability of a dissipative continuous time crystal (CTC) towards a time cr
Externí odkaz:
http://arxiv.org/abs/2411.00155
Autor:
A. Necchi, P. Grivas, G. Bratslavsky, O. Shapiro, J. Jacob, E. Sokol, J. Vergilio, J. Killian, D. Lin, J. Haberberger, J. Tse, S. Ramkissoon, E. Severson, A. Hemmerich, R. Huang, S. Ali, J. Chung, R. Madison, B. Alexander, P. Reddy, J. Elvin, A. Schrock, N. Danziger, J. Ross
Publikováno v:
European Urology Open Science, Vol 19, Iss , Pp e1665-e1666 (2020)
Externí odkaz:
https://doaj.org/article/a621a74f87034fe8a188ab337b30afa5
Autor:
Kongkhambut, Phatthamon, Cosme, Jayson G., Skulte, Jim, Armijos, Michelle A. Moreno, Mathey, Ludwig, Hemmerich, Andreas, Keßler, Hans
Discrete (DTCs) and continuous time crystals (CTCs) are novel dynamical many-body states, that are characterized by robust self-sustained oscillations, emerging via spontaneous breaking of discrete or continuous time translation symmetry. DTCs are pe
Externí odkaz:
http://arxiv.org/abs/2402.12378
Autor:
Skulte, Jim, Kongkhambut, Phatthamon, Keßler, Hans, Hemmerich, Andreas, Mathey, Ludwig, Cosme, Jayson G.
Publikováno v:
Phys. Rev. A 109, 063317 (2024)
We propose a general mechanism for generating limit cycle (LC) oscillations by coupling a linear bosonic mode to a dissipative nonlinear bosonic mode. By analyzing the stability matrix, we show that LCs arise due to a supercritical Hopf bifurcation.
Externí odkaz:
http://arxiv.org/abs/2401.05332
We present an efficient cooling scheme for fermionic $^{40}{\text{K}}$ atoms, using laser light red and blue detuned with respect to the $\mathcal{D}2$ and $\mathcal{D}1$ principle flourescence lines, respectively. The cooling scheme is found to sign
Externí odkaz:
http://arxiv.org/abs/2311.00561
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043210 (2020)
The phenomenon of metastability can shape dynamical processes on all temporal and spatial scales. Here, we induce metastable dynamics by pumping ultracold bosonic atoms from the lowest band of an optical lattice to an excitation band, via a sudden qu
Externí odkaz:
https://doaj.org/article/469fbbb37440447abfccefcfdbcce566
Quantum gas systems provide a unique experimental platform to study a fundamental paradigm of quantum many-body physics: the crossover between Bose-Einstein condensed (BEC) molecular pairs and Bardeen Cooper Schrieffer (BCS) superfluidity. Some studi
Externí odkaz:
http://arxiv.org/abs/2302.05692
Autor:
Wang, Xiao-Qiong, Luo, Guang-Quan, Liu, Jin-Yu, Huang, Guan-Hua, Li, Zi-Xiang, Wu, Congjun, Hemmerich, Andreas, Xu, Zhi-Fang
Publikováno v:
Phys. Rev. Lett. 131, 226001 (2023)
Understanding strongly correlated quantum materials, such as high $T_\textrm{c}$ superconductors, iron-based superconductors, and twisted bilayer graphene systems, remains to be one of the outstanding challenges in condensed matter physics. Quantum s
Externí odkaz:
http://arxiv.org/abs/2211.05578
Autor:
Helleckes, Laura Marie, Hemmerich, Johannes, Wiechert, Wolfgang, von Lieres, Eric, Grünberger, Alexander
Fostered by novel analytical techniques, digitalization and automation, modern bioprocess development provides high amounts of heterogeneous experimental data, containing valuable process information. In this context, data-driven methods like machine
Externí odkaz:
http://arxiv.org/abs/2210.02200
Autor:
Skulte, Jim, Kongkhambut, Phatthamon, Rao, Sahana, Mathey, Ludwig, Keßler, Hans, Hemmerich, Andreas, Cosme, Jayson G.
We demonstrate condensate formation in a dark state in an ultracold quantum gas coupled to a high-finesse cavity and pumped by a shaken optical lattice. We show experimentally and theoretically that the atoms in the dark state display a strong suppre
Externí odkaz:
http://arxiv.org/abs/2209.03342