Zobrazeno 1 - 10
of 1 455
pro vyhledávání: '"P, 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:
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
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
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract Maintaining vigilance is essential for many everyday tasks, but over time, our ability to sustain it inevitably decreases, potentially entailing severe consequences. High-definition transcranial direct current stimulation (HD-tDCS) has prove
Externí odkaz:
https://doaj.org/article/302a10bd8f54472092da11bfea3a0544
Hexagonal optical lattices offer a tunable platform to study exotic orbital physics in solid state materials. Here, we present a versatile high-precision scheme to implement a hexagonal optical lattice potential, which is engineered by overlapping tw
Externí odkaz:
http://arxiv.org/abs/2207.04670