Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Erne, Sebastian"'
We study the dynamics and decay of quantum phase coherence for Bose-Einstein condensates in tunnel-coupled quantum wires. The two elongated Bose-Einstein condensates exhibit a wide variety of dynamic phenomena where quantum fluctuations can lead to a
Externí odkaz:
http://arxiv.org/abs/2410.10543
Autor:
Murtadho, Taufiq, Cataldini, Federica, Erne, Sebastian, Gluza, Marek, Tajik, Mohammadamin, Schmiedmayer, Jörg, Ng, Nelly H. Y.
Studying the dynamics of quantum many-body systems is often constrained by the limitations in probing relevant observables, especially in continuous systems. A powerful method to gain information about such systems is the reconstruction of local curr
Externí odkaz:
http://arxiv.org/abs/2408.03736
Autor:
Murtadho, Taufiq, Gluza, Marek, Arifa, Khatee Zathul, Erne, Sebastian, Schmiedmayer, Jörg, Ng, Nelly H. Y.
Spatially resolved relative phase measurement of two adjacent 1D Bose gases is enabled by matter-wave interference upon free expansion. However, longitudinal dynamics is typically ignored in the analysis of experimental data. We provide an analytical
Externí odkaz:
http://arxiv.org/abs/2403.05528
Autor:
Ott, Robert, Zache, Torsten V., Prüfer, Maximilian, Erne, Sebastian, Tajik, Mohammadamin, Pichler, Hannes, Schmiedmayer, Jörg, Zoller, Peter
We discuss Hamiltonian learning in quantum field theories as a protocol for systematically extracting the operator content and coupling constants of effective field theory Hamiltonians from experimental data. Learning the Hamiltonian for varying spat
Externí odkaz:
http://arxiv.org/abs/2401.01308
The formation of dispersive shock waves in the one-dimensional Bose gas represents a limitation of Generalized Hydrodynamics (GHD) due to the coarse-grained nature of the theory. Nevertheless, GHD accurately captures the long wavelength behavior indi
Externí odkaz:
http://arxiv.org/abs/2304.10533
Autor:
Deutschmann-Olek, Andreas, Schrom, Katharina, Würkner, Nikolaus, Schmiedmayer, Jörg, Erne, Sebastian, Kugi, Andreas
In this paper, we investigate the manipulation of quasi-1D Bose gases that are trapped in a highly elongated potential by optimal control methods. The effective meanfield dynamics of the gas can be described by a one-dimensional non-polynomial Schr\"
Externí odkaz:
http://arxiv.org/abs/2304.01051
We consider the expansion of wave packets governed by the free Schr\"odinger equation. This seemingly simple task plays an important role in simulations of various quantum experiments and in particular in the field of matter-wave interferometry. The
Externí odkaz:
http://arxiv.org/abs/2303.09464
Autor:
Calzavara, Martino, Kuriatnikov, Yevhenii, Deutschmann-Olek, Andreas, Motzoi, Felix, Erne, Sebastian, Kugi, Andreas, Calarco, Tommaso, Schmiedmayer, Jörg, Prüfer, Maximilian
We present our new experimental and theoretical framework which combines a broadband superluminescent diode (SLED/SLD) with fast learning algorithms to provide speed and accuracy improvements for the optimization of 1D optical dipole potentials, here
Externí odkaz:
http://arxiv.org/abs/2210.07776
Autor:
Tajik, Mohammadamin, Gluza, Marek, Sebe, Nicolas, Schüttelkopf, Philipp, Cataldini, Federica, Sabino, João, Møller, Frederik, Ji, Si-Cong, Erne, Sebastian, Guarnieri, Giacomo, Sotiriadis, Spyros, Eisert, Jens, Schmiedmayer, Jörg
Publikováno v:
Proceedings of the National Academy of Sciences 120, e2301287120 (2023)
We investigate signal propagation in a quantum field simulator of the Klein-Gordon model realized by two strongly coupled parallel one-dimensional quasi-condensates. By measuring local phononic fields after a quench, we observe the propagation of cor
Externí odkaz:
http://arxiv.org/abs/2209.09132
Autor:
Barroso, Vitor S., Geelmuyden, August, Fifer, Zack, Erne, Sebastian, Avgoustidis, Anastasios, Hill, Richard J. A., Weinfurtner, Silke
For the past two hundred years, parametric instabilities have been studied in various physical systems, such as fluids, mechanical devices and even inflationary cosmology. It was not until a few decades ago that this subharmonic unstable response aro
Externí odkaz:
http://arxiv.org/abs/2207.02199