Zobrazeno 1 - 10
of 51
pro vyhledávání: '"STEGMAIER, ALEXANDER"'
Autor:
Stegmaier, Alexander, Fritzsche, Alexander, Sorbello, Riccardo, Greiter, Martin, Brand, Hauke, Barko, Christine, Hofer, Maximilian, Schwingenschlögl, Udo, Moessner, Roderich, Lee, Ching Hua, Szameit, Alexander, Alu, Andrea, Kießling, Tobias, Thomale, Ronny
We build Floquet-driven capactive circuit networks to realize topological states of matter in the frequency domain. We find the Floquet circuit network equations of motion to reveal a potential barrier which effectively acts as a boundary in frequenc
Externí odkaz:
http://arxiv.org/abs/2407.10191
Autor:
Dey, Santanu, Chen, Anffany, Basteiro, Pablo, Fritzsche, Alexander, Greiter, Martin, Kaminski, Matthias, Lenggenhager, Patrick M., Meyer, Rene, Sorbello, Riccardo, Stegmaier, Alexander, Thomale, Ronny, Erdmenger, Johanna, Boettcher, Igor
Publikováno v:
Phys. Rev. Lett. 133, 061603 (2024)
We demonstrate how table-top settings combining hyperbolic lattices with nonlinear dynamics universally encode aspects of the bulk-boundary-correspondence between gravity in anti-de-Sitter (AdS) space and conformal field theory (CFT). Our concrete an
Externí odkaz:
http://arxiv.org/abs/2404.03062
Autor:
Stegmaier, Alexander, Brand, Hauke, Imhof, Stefan, Fritzsche, Alexander, Helbig, Tobias, Hofmann, Tobias, Boettcher, Igor, Greiter, Martin, Lee, Ching Hua, Bahl, Gaurav, Szameit, Alexander, Kießling, Tobias, Thomale, Ronny, Upreti, Lavi K.
Quantized adiabatic transport can occur when a system is slowly modulated over time. In most realizations however, the efficiency of such transport is reduced by unwanted dissipation, back-scattering, and non-adiabatic effects. In this work, we reali
Externí odkaz:
http://arxiv.org/abs/2306.15434
Autor:
Hohmann, Hendrik, Hofmann, Tobias, Helbig, Tobias, Imhof, Stefan, Brand, Hauke, Upreti, Lavi K., Stegmaier, Alexander, Fritzsche, Alexander, Müller, Tobias, Schwingenschlögl, Udo, Lee, Ching Hua, Greiter, Martin, Molenkamp, Laurens W., Kießling, Tobias, Thomale, Ronny
Publikováno v:
Phys. Rev. Research 5, L012041 (2023)
We observe a localized cnoidal (LCn) state in an electric circuit network. Its formation derives from the interplay of non-linearity and the topology inherent to a Su-Schrieffer-Heeger (SSH) chain of inductors. Varicap diodes act as voltage-dependent
Externí odkaz:
http://arxiv.org/abs/2206.09931
Autor:
Chen, Anffany, Brand, Hauke, Helbig, Tobias, Hofmann, Tobias, Imhof, Stefan, Fritzsche, Alexander, Kießling, Tobias, Stegmaier, Alexander, Upreti, Lavi K., Neupert, Titus, Bzdušek, Tomáš, Greiter, Martin, Thomale, Ronny, Boettcher, Igor
Publikováno v:
Nat. Commun. 14, 622 (2023)
Curved spaces play a fundamental role in many areas of modern physics, from cosmological length scales to subatomic structures related to quantum information and quantum gravity. In tabletop experiments, negatively curved spaces can be simulated with
Externí odkaz:
http://arxiv.org/abs/2205.05106
Motivated by recent experimental breakthroughs in realizing hyperbolic lattices in superconducting waveguides and electric circuits, we compute the Hofstadter butterfly on regular hyperbolic tilings. By utilizing large hyperbolic lattices with period
Externí odkaz:
http://arxiv.org/abs/2111.05779
Autor:
Lenggenhager, Patrick M., Stegmaier, Alexander, Upreti, Lavi K., Hofmann, Tobias, Helbig, Tobias, Vollhardt, Achim, Greiter, Martin, Lee, Ching Hua, Imhof, Stefan, Brand, Hauke, Kießling, Tobias, Boettcher, Igor, Neupert, Titus, Thomale, Ronny, Bzdušek, Tomáš
Publikováno v:
Nat. Commun. 13, 4373 (2022)
The Laplace operator encodes the behavior of physical systems at vastly different scales, describing heat flow, fluids, as well as electric, gravitational, and quantum fields. A key input for the Laplace equation is the curvature of space. Here we di
Externí odkaz:
http://arxiv.org/abs/2109.01148
Autor:
Stegmaier, Alexander, Imhof, Stefan, Helbig, Tobias, Hofmann, Tobias, Lee, Ching Hua, Kremer, Mark, Fritzsche, Alexander, Feichtner, Thorsten, Klembt, Sebastian, Höfling, Sven, Boettcher, Igor, Fulga, Ion Cosma, Schmidt, Oliver G., Greiter, Martin, Kiessling, Tobias, Szameit, Alexander, Thomale, Ronny
Publikováno v:
Phys. Rev. Lett. 126, 215302 (2021)
We employ electric circuit networks to study topological states of matter in non-Hermitian systems enriched by parity-time symmetry $\mathcal{PT}$ and chiral symmetry anti-$\mathcal{PT}$ ($\mathcal{APT}$). The topological structure manifests itself i
Externí odkaz:
http://arxiv.org/abs/2011.14836
Autor:
Weidemann, Sebastian, Kremer, Mark, Helbig, Tobias, Hofmann, Tobias, Stegmaier, Alexander, Greiter, Martin, Thomale, Ronny, Szameit, Alexander
Publikováno v:
Science (2020)
In the last two decades, the ubiquitous effect of dissipation has proven to entail astonishing non-Hermitian features, rather than just being an inescapable nuisance. As an alternative route to non-Hermiticity, we tailor the anisotropy of a lattice,
Externí odkaz:
http://arxiv.org/abs/2004.01990
Autor:
Kotwal, Tejas, Moseley, Fischer, Stegmaier, Alexander, Imhof, Stefan, Brand, Hauke, Kießling, Tobias, Thomale, Ronny, Ronellenfitsch, Henrik, Dunkel, Jörn
Publikováno v:
PNAS August 10, 2021 118 (32) e2106411118
The transfer of topological concepts from the quantum world to classical mechanical and electronic systems has opened fundamentally new approaches to protected information transmission and wave guidance. A particularly promising technology are recent
Externí odkaz:
http://arxiv.org/abs/1903.10130