Visualization of branch points in PT-symmetric waveguides.
By S. Klaiman, U. Günther, N. Moiseyev. Physical Review Letters, 2008
736 citations recorded by the source corpus.
The visualization of an exceptional point in a PT-symmetric directional coupler (DC) is demonstrated. In such a system the exceptional point can be probed by varying only a single parameter. Using the Rayleigh-Schrödinger perturbation theory we prove that the spectrum of a PT-symmetric Hamiltonian is real as long as the radius of convergence has not been reached. We also show how one can use a PT-symmetric directional coupler to measure the radius of convergence for non-PT-symmetric structures. For such systems the physical meaning of the rather mathematical term radius of convergence is exemplified.
Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/f505d359eb96f9491b0fbb56414178ac45fde07e
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In Atomic and Molecular Physics, and Optics
- Andrea Alù
- Jianke Yang
- Dmitry A. Zezyulin
- R. Fleury
- Vladimir V. Konotop
- Dimitrios L. Sounas
- Demetrios N. Christodoulides
- Mordechai Segev
In Statistical and Nonlinear Physics
- Jianke Yang
- Andrea Alù
- Dmitry A. Zezyulin
- Vladimir V. Konotop
- Yair Rezek
- Demetrios N. Christodoulides
- R. Fleury
- Mordechai Segev
Citations in the corpus
- A review on non-Hermitian skin effect (2022, background): “electronic systems with interactions [5], and classical systems with gain or loss [6-20].”
- Observation of parity–time symmetry in optics (2010, background): “This signifies the onset of a spontaneous PT symmetry-breaking, that is, a ‘phase transition’ from the exact to broken-PT phase 7,20 .”