Zobrazeno 1 - 10
of 524
pro vyhledávání: '"Alexander, Szameit"'
Autor:
Ignacio Salinas, Javier Cubillos Cornejo, Alexander Szameit, Pablo Solano, Rodrigo A. Vicencio
Publikováno v:
APL Photonics, Vol 9, Iss 2, Pp 020801-020801-7 (2024)
Photonic lattices enable experimental exploration of transport and localization phenomena, two of the major goals in physics and technology. In particular, the optical excitation of some lattice sites, which evanescently couple to a lattice array, em
Externí odkaz:
https://doaj.org/article/071496e2ef1b452fb1f1f7be62b05de5
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p L042036 (2023)
We implement the equation of motion of the large-N Gross-Neveu model from strong-interaction physics in photonic waveguide arrays and study one of its paradigmatic multifermion bound-state solutions in an optical experiment. The present study constit
Externí odkaz:
https://doaj.org/article/91a838c7d7f04beca4559419df301524
Autor:
Georgios G. Pyrialakos, Nora Schmitt, Nicholas S. Nye, Matthias Heinrich, Nikolaos V. Kantartzis, Alexander Szameit, Demetrios N. Christodoulides
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
The electrons in 2D materials like graphene are described by the relativistic Dirac equation. Here the authors present a lattice of evanescently coupled waveguides that emulates a wide range of Dirac excitations and study the type-II edge states that
Externí odkaz:
https://doaj.org/article/777851c257af47a0bbe6961a63c4b4c9
Autor:
Mark Kremer, Ioannis Petrides, Eric Meyer, Matthias Heinrich, Oded Zilberberg, Alexander Szameit
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Topological insulators are characterized by quantized topological invariants. Here, the authors report an insulator state showing spectral bands without quantized indices, yet robust boundary states in a photonic setup.
Externí odkaz:
https://doaj.org/article/24f93b7118f248ef867853a67ad1dabc
Autor:
Mark Kremer, Tobias Biesenthal, Lukas J. Maczewsky, Matthias Heinrich, Ronny Thomale, Alexander Szameit
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
To date, experimental demonstrations of PT-symmetric systems have been restricted to one dimension. Here, the authors experimentally realize and characterize a two-dimensional PT-symmetric system using photonic lattice waveguides with judiciously des
Externí odkaz:
https://doaj.org/article/6321a730de6d49a9b7c181b1bc081389
Autor:
Julian Münzberg, Christoph Dittel, Maxime Lebugle, Andreas Buchleitner, Alexander Szameit, Gregor Weihs, Robert Keil
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010901 (2022)
Externí odkaz:
https://doaj.org/article/71f94120bf334e87b26807de5129886c
Autor:
Vera Neef, Julien Pinske, Friederike Klauck, Lucas Teuber, Mark Kremer, Max Ehrhardt, Matthias Heinrich, Stefan Scheel, Alexander Szameit
Publikováno v:
Nature Physics
When a quantum system undergoes slow changes, the evolution of its state depends only on the corresponding trajectory in Hilbert space. This phenomenon, known as quantum holonomy, brings to light the geometric aspects of quantum theory. Depending on
Autor:
Eran Lustig, Lukas J. Maczewsky, Julius Beck, Tobias Biesenthal, Matthias Heinrich, Zhaoju Yang, Yonatan Plotnik, Alexander Szameit, Mordechai Segev
Publikováno v:
Nature. 609:931-935
The hallmark of topological insulators (TIs) is the scatter-free propagation of waves in topologically protected edge channels
Publikováno v:
Laser & Photonics Reviews.
Autor:
Julian Münzberg, Christoph Dittel, Maxime Lebugle, Andreas Buchleitner, Alexander Szameit, Gregor Weihs, Robert Keil
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020326 (2021)
We investigate, in a four-photon interference experiment in a laser-written waveguide structure, how symmetries control the suppression of many-body output events of a J_{x} unitary. We show that totally destructive interference does not require mutu
Externí odkaz:
https://doaj.org/article/ca0ba5c5560948d5bd9e71afaf21eed5