Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Braak, Daniel"'
Publikováno v:
JOSA B vol.41, pp.C97-C111 (2024)
The Rabi-Stark model is a non-linear generalization of the quantum Rabi model including the dynamical Stark shift as a tunable term, which can be realized via quantum simulation on a cavity QED platform. When the Stark coupling becomes equal to the m
Externí odkaz:
http://arxiv.org/abs/2403.16758
Autor:
Braak, Daniel
A generalization of the quantum Rabi model is obtained by replacing the linear (dipole) coupling between the two-level system and the radiation mode by a non-linear expression in the creation and annihilation operators, corresponding to multi-photon
Externí odkaz:
http://arxiv.org/abs/2401.02370
The asymmetric quantum Rabi model (AQRM) is a fundamental model in quantum optics describing the interaction of light and matter. Besides its immediate physical interest, the AQRM possesses an intriguing mathematical structure which is far from being
Externí odkaz:
http://arxiv.org/abs/2310.09811
Publikováno v:
Entropy 24, 1015 (2022)
The quantum Rabi model (QRM) with linear coupling between light mode and qubit exhibits the analog of a second order phase transition for vanishing mode frequency which allows for criticality-enhanced quantum metrology in a few-body system. We show t
Externí odkaz:
http://arxiv.org/abs/2206.08410
Autor:
Braak, Daniel
Publikováno v:
Annalen der Physik 535, 2200519 (2023)
The various generalized spectral determinants (G-functions) of the two-photon quantum Rabi model are analyzed with emphasis on the qualitative aspects of the regular spectrum. Whereas all of them yield at least a subset of the exact regular eigenvalu
Externí odkaz:
http://arxiv.org/abs/2206.02509
Publikováno v:
New J. Phys. 24 058001 (2022)
We discuss the elementary errors in D.G. Zhang's [New. J. Phys. 23, 093014 (2021)] claimed exact solution of the quantum Rabi model. The erroneous solution is seen to be nothing more than the combined solution of the simpler Jaynes-Cummings and anti-
Externí odkaz:
http://arxiv.org/abs/2111.05091
In two dimensions, an s-wave superconductor in the presence of Rashba spin-orbit coupling possesses distinct topologically non-trivial ground state phases controlled by Zeeman splitting and band filling. These phases can be characterized in terms of
Externí odkaz:
http://arxiv.org/abs/2104.09651
Publikováno v:
Phys. Rev. A 103, 043708 (2021)
In this work, the anisotropic variant of the quantum Rabi model with different coupling strengths of the rotating and counter-rotating wave terms is studied by the Bogoliubov operator approach. The anisotropy preserves the parity symmetry of the orig
Externí odkaz:
http://arxiv.org/abs/2101.12396
Publikováno v:
J. Phys. A: Math. Theor. 54 285202 (2021)
The symmetric quantum Rabi model (QRM) is integrable due to a discrete $\mathbb{Z}_2$-symmetry of the Hamiltonian. This symmetry is generated by a known involution operator, measuring the parity of the eigenfunctions. An experimentally relevant modif
Externí odkaz:
http://arxiv.org/abs/2101.04305
Publikováno v:
Scientific Reports 9, 9244 (2019)
A non-reciprocal quantum ring, where one arm of the ring contains the Rashba spin-orbit interaction but not in the other arm, is found to posses very unique electronic properties. In this ring the Aharonov-Bohm oscillations are totally absent. That i
Externí odkaz:
http://arxiv.org/abs/1907.03508