Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Martin Fraas"'
Publikováno v:
Quantum, Vol 6, p 793 (2022)
A gapped ground state of a quantum spin system has a natural length scale set by the gap. This length scale governs the decay of correlations. A common intuition is that this length scale also controls the spatial relaxation towards the ground state
Externí odkaz:
https://doaj.org/article/3980f2b7a8324123b520789c5935cb19
Publikováno v:
Physical Review X, Vol 6, Iss 4, p 041031 (2016)
Markovian reservoir engineering, in which time evolution of a quantum system is governed by a Lindblad master equation, is a powerful technique in studies of quantum phases of matter and quantum information. It can be used to drive a quantum system t
Externí odkaz:
https://doaj.org/article/eb387435007642a48ddbee1c7025723a
Publikováno v:
New Journal of Physics, Vol 16, Iss 11, p 113002 (2014)
We advocate a Bayesian approach to optimal quantum frequency estimation—an important issue for future quantum enhanced atomic clock operation. The approach provides a clear insight into the interplay between decoherence and the extent of prior know
Externí odkaz:
https://doaj.org/article/46db9b2c3a584bb39176883784044b01
Publikováno v:
Annales Henri Poincaré
Annales Henri Poincaré, Springer Verlag, 2021
Annales Henri Poincaré, 2021
Annales Henri Poincaré, Springer Verlag, 2021
Annales Henri Poincaré, 2021
Quantum trajectories are Markov processes that describe the time-evolution of a quantum system undergoing continuous indirect measurement. Mathematically, they are defined as solutions of the so-called "Stochastic Schr\"odinger Equations", which are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9ab2647f695c1fcc289d9c46cd5c5e9
https://doi.org/10.1007/s00023-020-01001-4
https://doi.org/10.1007/s00023-020-01001-4
Publikováno v:
Journal of Mathematical Physics
Journal of Mathematical Physics, 2022, 63, pp.062101. ⟨10.1063/5.0088668⟩
Journal of Mathematical Physics, 2022, 63, pp.062101. ⟨10.1063/5.0088668⟩
The appearance of tracks, close to classical orbits, left by charged quantum particles propagating inside a detector, such as a cavity periodically illuminated by light pulses, is studied for a family of idealized models. In the semi-classical regime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47c51ff8fcb634427ee9883e474b8ef3
https://hal.science/hal-03583859
https://hal.science/hal-03583859
Publikováno v:
Analytic Trends in Mathematical Physics. :23-41
We relate explicitly the adiabatic curvature -- in flux space -- of an interacting Hall insulator with nondegenerate ground state to various linear response coefficients, in particular the Kubo response and the adiabatic response. The flexibility of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d459947f3f3b9137e78445159b564da
https://doi.org/10.1090/conm/741/14918
https://doi.org/10.1090/conm/741/14918
Publikováno v:
Analytic Trends in Mathematical Physics. :43-58
In these lecture notes, we review the adiabatic theorem in quantum mechanics, focusing on a recent extension to many-body systems. The role of locality is emphasized and the relation to the quasi-adiabatic flow discussed. An important application of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47d1f2c5ed3c5fd72bc958103d9bb433
https://doi.org/10.1090/conm/741/14919
https://doi.org/10.1090/conm/741/14919
Publikováno v:
SciPost Physics, Vol 11, Iss 2, p 027 (2021)
Dynamical decoupling is the leading technique to remove unwanted interactions in a vast range of quantum systems through fast rotations. But what determines the time-scale of such rotations in order to achieve good decoupling? By providing an explici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbd78549a91cc954cc3051c12afc07da
https://doi.org/10.21468/scipostphys.11.2.027
https://doi.org/10.21468/scipostphys.11.2.027
Publikováno v:
Communications in Mathematical Physics
Communications in Mathematical Physics, In press, ⟨10.1007/s00220-021-03935-0⟩
Communications in Mathematical Physics, Springer Verlag, In press, ⟨10.1007/s00220-021-03935-0⟩
Communications in Mathematical Physics, In press, ⟨10.1007/s00220-021-03935-0⟩
Communications in Mathematical Physics, Springer Verlag, In press, ⟨10.1007/s00220-021-03935-0⟩
The phenomenon that a quantum particle propagating in a detector, such as a Wilson cloud chamber, leaves a track close to a classical trajectory is analyzed. We introduce an idealized quantum-mechanical model of a charged particle that is periodicall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c100165804cb1c572f84f9ffbdd28eb7
https://hal.science/hal-02891517
https://hal.science/hal-02891517
Autor:
Martin Fraas
BAROCKE PRACHT UND EDLE GESCHÄFTE Die Salzachstadt geizt nicht mit attraktiven Sehenswürdigkeiten. Salzburgs Dom mit seiner Doppelturmfassade ist ein architektonisches Glanzstück barocker Prachtentfaltung. Gleiches gilt für die Kollegienkirche de