Zobrazeno 1 - 10
of 1 101
pro vyhledávání: '"P, Strănský"'
We extend the standard semiclassical theory of Exited-State Quantum Phase Transitions (ESQPTs), based on a classification of stationary points in the classical Hamiltonian, to constrained systems. We adopt the method of Lagrange multipliers to find a
Externí odkaz:
http://arxiv.org/abs/2412.04240
Publikováno v:
Phys. Rev. A 110, L030202 (2024)
We analyze dynamics of the Rabi model describing interactions of a qubit with a single soft-mode oscillator. We show that the model with a slightly violated parity generates symmetric Schr{\"o}dinger cat states of the oscillator, which suddenly peris
Externí odkaz:
http://arxiv.org/abs/2407.04389
Autor:
Stransky, Michal, Lane, Thomas J., Gorel, Alexander, Boutet, Sébastien, Schlichting, Ilme, Mancuso, Adrian P., Jurek, Zoltan, Ziaja, Beata
Using X-ray free electron laser (XFEL) radiation to conduct an X-ray pump X-ray probe experiment, we studied strongly ionized water as part of our ongoing work on radiation damage. After irradiance with a pump pulse with a nominal fluence of ~$5 \tim
Externí odkaz:
http://arxiv.org/abs/2402.10840
Autor:
Klemmer, Jan H., Gutfleisch, Marco, Stransky, Christian, Acar, Yasemin, Sasse, M. Angela, Fahl, Sascha
Usable and secure authentication on the web and beyond is mission-critical. While password-based authentication is still widespread, users have trouble dealing with potentially hundreds of online accounts and their passwords. Alternatives or extensio
Externí odkaz:
http://arxiv.org/abs/2309.00744
Autor:
Inoue, Ichiro, Yamada, Jumpei, Kapcia, Konrad J., Stransky, Michal, Tkachenko, Victor, Jurek, Zoltan, Inoue, Takato, Osaka, Taito, Inubushi, Yuichi, Ito, Atsuki, Tanaka, Yuto, Matsuyama, Satoshi, Yamauchi, Kazuto, Yabashi, Makina, Ziaja, Beata
Publikováno v:
Phys. Rev. Lett. 131, 163201 (2023)
X-ray diffraction of silicon irradiated with tightly focused femtosecond x-ray pulses (photon energy: 11.5 keV, pulse duration: 6 fs) was measured at various x-ray intensities up to $4.6\times10^{19}$ W/cm$^2$. The measurement reveals that the diffra
Externí odkaz:
http://arxiv.org/abs/2304.05948
Autor:
Novotný, Jakub, Stránský, Pavel
Publikováno v:
Phys. Rev. E 107, 054220 (2023)
A detailed numerical study reveals that the asymptotic values of the standard deviation-to-mean ratio of the out-of-time-ordered correlator can be successfully used as a measure of the quantum chaoticity of the system. We employ a finite-size fully c
Externí odkaz:
http://arxiv.org/abs/2301.02456
Autor:
Smilauer, Vaclav, Angelidakis, Vasileios, Catalano, Emanuele, Caulk, Robert, Chareyre, Bruno, Chevremont, William, Dorofeenko, Sergei, Duriez, Jerome, Dyck, Nolan, Elias, Jan, Er, Burak, Eulitz, Alexander, Gladky, Anton, Guo, Ning, Jakob, Christian, Kneib, Francois, Kozicki, Janek, Marzougui, Donia, Maurin, Raphael, Modenese, Chiara, Pekmezi, Gary, Scholtes, Luc, Sibille, Luc, Stransky, Jan, Sweijen, Thomas, Thoeni, Klaus, Yuan, Chao
Yade is an extensible open-source framework for discrete numerical models, focused on the Discrete Element Method. The computation parts are written in c++ using a flexible object model and allowing independent implementation of new algorithms and in
Externí odkaz:
http://arxiv.org/abs/2301.00611
We study exceptional points (EPs) of a nonhermitian Hamiltonian $\hat{H}(\lambda,\delta)$ whose parameters $\lambda \in {\mathbb C}$ and $\delta \in {\mathbb R}$. As the real control parameter $\delta$ is varied, the $k$-th EP (or $k$-th cluster of s
Externí odkaz:
http://arxiv.org/abs/2212.14804
Publikováno v:
Phys. Rev. B 107, 094307 (2023)
Dynamical phase transitions are defined through non-analyticities of the survival probability of an out-of-equilibrium time-evolving state at certain critical times. They ensue from zeros of the corresponding survival amplitude. By extending the time
Externí odkaz:
http://arxiv.org/abs/2212.08028
We propose a protocol for transitionless driving of a bound quantum system in its parameter space using repeated measurement-like interactions with an external spectator system. As a consequence of the quantum Zeno effect, the fidelity of the final s
Externí odkaz:
http://arxiv.org/abs/2211.11451