Towards a quantum time mirror for non-relativistic wave packets

Autor: Phillipp Reck, Cosimo Gorini, Arseni Goussev, Viktor Krueckl, Mathias Fink, Klaus Richter

Publikováno v: New Journal of Physics, Vol 20, Iss 3, p 033013 (2018)

We propose a method—a quantum time mirror (QTM)—for simulating a partial time-reversal of the free-space motion of a non-relativistic quantum wave packet. The method is based on a short-time spatially homogeneous perturbation to the wave packet d

Externí odkaz: https://doaj.org/article/371cfaeec54a455baa12d64615815ae8

Dirac quantum time mirror

Autor: Phillipp Reck, Cosimo Gorini, Arseni Goussev, Klaus Richter, Viktor Krueckl, Mathias Fink

Publikováno v: Reck, P, Gorini, C, Goussev, A, Krueckl, V, Fink, M & Richter, K 2017, ' Dirac quantum time mirror ', Physical Review B, vol. 95, no. 16, 165421 . https://doi.org/10.1103/PhysRevB.95.165421

Both metaphysical and practical considerations related to time inversion have intrigued scientists for generations. Physicists have strived to devise and implement time-inversion protocols, in particular different forms of "time mirrors" for classica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78259bbe5e00d2f2773d8536c1d7f61c

Switching spin and charge between edge states in topological insulator constrictions: a transer matrix approach

Autor: Viktor Krueckl, Klaus Richter

Publikováno v: SPIE Proceedings.

We show how the different spin polarized edge states of the two-dimensional topological insulator mercury telluride can be selectively switched within an elongated constriction. To this end, we derive an effective onedimensional Hamiltonian incorpora

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8ba9c062c5aee3cce052fa5ad16bb9c
https://doi.org/10.1117/12.931306

Bloch-Zener Oscillations in Graphene and Topological Insulators

Autor: Klaus Richter, Viktor Krueckl

We show that superlattices based on zero-gap semiconductors such as graphene and mercury telluride exhibit characteristic Bloch-Zener oscillations that emerge from the coherent superposition of Bloch oscillations and multiple Zener tunneling between

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c344ffcbb642ba2d6c16abb77ccab92

Switching spin and charge between edge states in topological insulator constrictions

Autor: Klaus Richter, Viktor Krueckl

Since the prediction of a new topological state of matter in graphene, materials acting as topological insulators have attracted wide attention. Shortly after the theoretical proposal for a mercury telluride (HgTe)-based two-dimensional topological i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92ba668bfc16ac8415d47e2319da9438