# Coherence Resonance and Stochastic Resonance in an Excitable Semiconductor Superlattice.

@article{Momp2018CoherenceRA, title={Coherence Resonance and Stochastic Resonance in an Excitable Semiconductor Superlattice.}, author={Emanuel Momp{\'o} and Miguel Ruiz-Garc{\'i}a and Manuel Carretero and Holger T. Grahn and Yaohui Zhang and Luis L. Bonilla}, journal={Physical review letters}, year={2018}, volume={121 8}, pages={ 086805 } }

Collective electron transport causes a weakly coupled semiconductor superlattice under dc voltage bias to be an excitable system with 2N+2 degrees of freedom: electron densities and fields at N superlattice periods plus the total current and the field at the injector. External noise of sufficient amplitude induces regular current self-oscillations (coherence resonance) in states that are stationary in the absence of noise. Numerical simulations show that these oscillations are due to the…

## 15 Citations

Fast Detection of a Weak Signal by a Stochastic Resonance Induced by a Coherence Resonance in an Excitable GaAs/Al_{0.45}Ga_{0.55}As Superlattice.

- PhysicsPhysical review letters
- 2018

It is demonstrated that an excitable superlattice device can be used for the fast detection of weak signals submerged in noise and a novel kind of a stochastic resonance is identified, which is triggered by the coherence resonance.

Designing Hyperchaos and Intermittency in Semiconductor Superlattices.

- PhysicsPhysical review letters
- 2021

This system exhibits hyperchaos and varieties of intermittent chaos in extended dc voltage ranges and its chaotic attractors are robust and resilient against noises and against controlled random disorder due to growth fluctuations.

Quantum coherence resonance

- PhysicsNew Journal of Physics
- 2021

It is shown that coherence resonance, a phenomenon in which regularity of noise-induced oscillations in nonlinear excitable systems is maximized at a certain optimal noise intensity, can be observed…

Collective Coherence Resonance in Networks of Optical Neurons

- Physicsphysica status solidi (b)
- 2021

The dynamical properties of an optical neuron formed by a quantum dot semiconductor laser model subjected to optical injection and optical feedback are analyzed. The parameter space spanned by the…

Coherence Resonance in Random Erdös-Rényi Neural Networks: Mean-Field Theory

- PhysicsFrontiers in Applied Mathematics and Statistics
- 2021

A closed mean-field representation is derived that captures the global network dynamics and evaluates the transition between non-coherent and coherent state by various power spectra, Spike Field Coherence and information-theoretic measures.

A typical stochastic resonance in Landau-type potential field

- Physics
- 2020

Considering the significant influence of the asymmetric structure of the one-dimensional potential field on the stochastic resonance (SR), the research is extended to the two-dimensional asymmetric…

Correlations Preceding High-Intensity Events in the Chaotic Dynamics of a Raman Fiber Laser

- PhysicsEntropy
- 2019

The preferred temporal patterns remain the same all through the pump current range studied, even though two clearly different dynamical regimes are covered, and it is found that the turbulent regime shows clearer signatures of determinism than the laminar regime.

Additive Noise-Induced System Evolution (ANISE)

- PhysicsFrontiers in Applied Mathematics and Statistics
- 2022

Additive noise has been known for a long time to not change a systems stability. The discovery of stochastic and coherence resonance in nature and their analytical description has started to change…

Wave-Based Spiking Neural Network with Nano-Structured Electronics

- Computer Science2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)
- 2019

The present paper is on neuromorphic computing with temporal spike signaling as elastic waves and building blocks using nano-structured electronic systems, and describes passive elements whose delay can be widely controlled electrically as well as geometrically.

Excitatory electromagnetic induction current enhances coherence resonance of the FitzHugh–Nagumo neuron

- BiologyInternational Journal of Modern Physics B
- 2019

Results of this study show that excitatory electromagnetic induction current can enhance noise-induced coherence resonance (CR) and provides a possible way to modulate CR of the nervous system.

## References

SHOWING 1-10 OF 59 REFERENCES

Experimental evidence for coherence resonance in a noise-driven GaAs/AlAs superlattice

- Physics
- 2014

The presence of coherence resonance is experimentally identified in a doped, weakly coupled GaAs/AlAs superlattice (SL), which exhibits current self-oscillations when driven by noise. The physical…

Noise-enhanced chaos in a weakly coupled GaAs/(Al,Ga)As superlattice.

- PhysicsPhysical review. E
- 2017

Noise-enhanced chaos in a doped, weakly coupled GaAs/Al_{0.45}Ga_{0.55}As superlattice has been observed at room temperature in experiments as well as in the results of the simulation of nonlinear…

TOPICAL REVIEW: Theory of nonlinear charge transport, wave propagation, and self-oscillations in semiconductor superlattices

- Physics
- 2001

Nonlinear charge transport in semiconductor superlattices under strong electric fields parallel to the growth direction results in rich dynamical behaviour including the formation of electric field…

Dynamics of electric-field domains and oscillations of the photocurrent in a simple superlattice model.

- PhysicsPhysical review. B, Condensed matter
- 1994

A discrete model is introduced to account for the time-periodic oscillations of the photocurrent and photoluminescence time-dependent oscillations in a superlattice observed by Kwok et al. in an undoped 40-period AlAs/GaAs superlATTice.

Fast Detection of a Weak Signal by a Stochastic Resonance Induced by a Coherence Resonance in an Excitable GaAs/Al_{0.45}Ga_{0.55}As Superlattice.

- PhysicsPhysical review letters
- 2018

It is demonstrated that an excitable superlattice device can be used for the fast detection of weak signals submerged in noise and a novel kind of a stochastic resonance is identified, which is triggered by the coherence resonance.

Non-linear dynamics of semiconductor superlattices

- Physics
- 2005

In the last decade, non-linear dynamical transport in semiconductor superlattices (SLs) has witnessed significant progress in theoretical descriptions as well as in experimentally observed non-linear…

Spontaneous quasi-periodic current self-oscillations in a weakly coupled GaAs/(Al,Ga)As superlattice at room temperature

- Physics
- 2013

We have experimentally observed spontaneous quasi-periodic current self-oscillations at room temperature in a doped, weakly coupled GaAs/(Al,Ga)As superlattice (SL) with 50 periods, 7 nm well width,…

Coherence Resonance in a Noise-Driven Excitable System

- Physics
- 1997

We study the dynamics of the excitable Fitz Hugh ‐ Nagumo system under external noisy driving. Noise activates the system producing a sequence of pulses. The coherence of these noise-induced…

Coherent signal amplification in bistable nanomechanical oscillators by stochastic resonance

- PhysicsNature
- 2005

Stochastic resonance in nanomechanical systems could have a function in the realization of controllable high-speed nanomechamical memory cells, and paves the way for exploring macroscopic quantum coherence and tunnelling.

Experimental observation of spontaneous chaotic current oscillations in GaAs/Al0.45Ga0.55As superlattices at room temperature

- Physics
- 2012

Spontaneous self-sustained chaotic current oscillations are observed experimentally in lightly-doped weakly-coupled GaAs/Al0.45Ga0.55As superlattices at room temperature for the first time. The mole…