scholarly journals Nonlinear-dissipation-induced nonreciprocal exceptional points

2021 ◽  
Author(s):  
Tao Li ◽  
Zikai Gao ◽  
Keyu Xia
Keyword(s):  
Nonlinear Dissipation ◽  
Exceptional Points

scholarly journals Exceptional points for photon pairs bound by nonlinear dissipation in cavity arrays

2018 ◽  
Vol 43 (24) ◽  
pp. 5917 ◽  
Author(s):  
Mark Lyubarov ◽  
Alexander Poddubny
Keyword(s):  
Nonlinear Dissipation ◽  
Exceptional Points ◽  
Photon Pairs

scholarly journals Exceptional points make an astroid in non-Hermitian Lieb lattice: Evolution and topological protection

2020 ◽  
Vol 102 (24) ◽  
Author(s):  
Yi-Xin Xiao ◽  
Kun Ding ◽  
Ruo-Yang Zhang ◽  
Zhi Hong Hang ◽  
C. T. Chan
Keyword(s):  
Exceptional Points ◽  
Lieb Lattice

scholarly journals Tuning nonlinear damping in graphene nanoresonators by parametric–direct internal resonance

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ata Keşkekler ◽  
Oriel Shoshani ◽  
Martin Lee ◽  
Herre S. J. van der Zant ◽  
Peter G. Steeneken ◽  
...  
Keyword(s):  
Parametric Resonance ◽  
Internal Resonance ◽  
Microscopic Theory ◽  
Fold Increase ◽  
Nonlinear Damping ◽  
Supporting Evidence ◽  
Nonlinear Dissipation ◽  
Modal Interactions ◽  
Solid State Physics ◽  
Internal Resonances

AbstractMechanical sources of nonlinear damping play a central role in modern physics, from solid-state physics to thermodynamics. The microscopic theory of mechanical dissipation suggests that nonlinear damping of a resonant mode can be strongly enhanced when it is coupled to a vibration mode that is close to twice its resonance frequency. To date, no experimental evidence of this enhancement has been realized. In this letter, we experimentally show that nanoresonators driven into parametric-direct internal resonance provide supporting evidence for the microscopic theory of nonlinear dissipation. By regulating the drive level, we tune the parametric resonance of a graphene nanodrum over a range of 40–70 MHz to reach successive two-to-one internal resonances, leading to a nearly two-fold increase of the nonlinear damping. Our study opens up a route towards utilizing modal interactions and parametric resonance to realize resonators with engineered nonlinear dissipation over wide frequency range.

scholarly journals Quantum metric and wave packets at exceptional points in non-Hermitian systems

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
D. D. Solnyshkov ◽  
C. Leblanc ◽  
L. Bessonart ◽  
A. Nalitov ◽  
Jiahuan Ren ◽  
...  
Keyword(s):  
Wave Packets ◽  
Exceptional Points
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