Nonlinear suppression of time reversals in PT-symmetric optical couplers
By A. Sukhorukov, Zhiyong Xu, Yuri Kivshar. 2010
208 citations recorded by the source corpus.
We reveal a generic connection between the effect of time reversals and nonlinear wave dynamics in systems with parity-time (PT) symmetry, considering a symmetric optical coupler with balanced gain and loss where these effects can be directly observed experimentally. We show that for intensities below a threshold level, the amplitudes oscillate between the waveguides, and the effects of gain and loss are exactly compensated after each period due to periodic time reversals. For intensities above a threshold level, nonlinearity suppresses periodic time reversals, leading to the symmetry breaking and a sharp beam switching to the waveguide with gain. Another nontrivial consequence of linear PT symmetry is that the threshold intensity remains the same when the input intensities at waveguides with loss and gain are exchanged.
Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/635119e8dcefdbd4c2fde230f5065b5633a0f94c
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
- Jianke Yang
- Dmitry A. Zezyulin
- Sergey V. Dmitriev
- Chao-Kuei Lee
- Jiahao Huang
- Vladimir V. Konotop
- A. Sukhorukov
- S. Suchkov
In Statistical and Nonlinear Physics
- Jianke Yang
- Dmitry A. Zezyulin
- Sergey V. Dmitriev
- Chao-Kuei Lee
- Jiahao Huang
- Vladimir V. Konotop
- A. Sukhorukov
- S. Suchkov
Citations in the corpus
- Nonlinear switching and solitons in PT‐symmetric photonic systems (2015, background): “It was found that nonlinear solutions belong to two classes [25]: (i) periodic solutions, where the intensities and relative phases in two waveguides are exactly restored after each period (z → z + z p) [Fig.”
- Nonlinear waves in PT -symmetric systems (2016, background): “The nonlinear generalization of the coupler model (36), i.e., a nonlinear PT -symmetric dimer iq̇0 = −iγq0 + κq1 + χ|q0|2q0, iq̇1 = iγq1 + κq0 + χ|q1|2q1, (40) was introduced by Ramezani et al. (2010) and Sukhorukov, Xu, and Kivshar (2010).”