AI Article Synopsis
- Scattering processes generally depend on incident wave characteristics and interference from wave-matter interactions.
- However, in systems that are periodically modulated and approach an exceptional point, scattering becomes less sensitive to these properties when the dwell time is above a critical threshold.
- This resilience can be used in control engineering, particularly in managing thermal and quantum fluctuations.
Article Abstract
Scattering processes are typically sensitive to the incident wave properties and to interference effects generated via wave-matter interactions with the target. We challenge this general belief in the case of targets that undergo time-periodic modulations encircling quasiadiabatically an exceptional point in a given parameter space. When the scattering dwell time is above a critical value τ_{c}, the scattered field is surprisingly insensitive to the properties of the incoming wave and local operational details of the driving. Instead, it reaches a fixed point attractor that can be controlled by the direction of the driving cycle. For dwell times below τ_{c}, the unusual robustness is abruptly suppressed. Such protocols may become useful tools in control engineering, including the management of thermal and quantum fluctuations.
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| http://dx.doi.org/10.1103/PhysRevLett.124.133905 | DOI Listing |
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