Design of parallel reservoir computing by mutually-coupled semiconductor lasers with optoelectronic feedback

Liang, Wen-Yan; Xu, Shi-Rong; Jiang, Li; Jia, Xin-Hong; Lin, Jia-Bing; Yang, Yu-Lian; Liu, Liming; Zhang, Xuan

doi:10.1016/j.optcom.2021.127120

Cited by 13 publications

(7 citation statements)

References 36 publications

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“…Several degrees of freedom of single photons, e.g. phase coding [4], frequency coding [5], polarization [6], time-bin [7], and hybrid time-bin and polarization [8], have already been proposed. Nevertheless, polarization based QKD has shown promising results regarding the reach [9], versatility [10], key-rates [6], and error-rates [11], showing the importance of the development of polarization-encoding QKD systems and subsystems.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a polarization-encoding system for quantum key distribution

Mantey,

Silva,

Pinto

et al. 2024

J. Opt.

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We present the design and implementation of a state-of-polarization (SOP) management technique and two efficient synchronizing methods for quantum key distribution (QKD) systems. This is achieved following a wavelength-division multiplexing approach, where the classical synchronization signal and the quantum states are propagated in the same optical fiber. The employed frame synchronization method is based on the monitoring of the quantum bit error ratio (QBER) of the quantum channel, thus avoiding additional hardware and high computational resources. We evaluate the operation of SOP generation method through the assessment of the individual response of the waveplates that comprise the employed electronic polarization controller. Finally, the performance was assessed by computing the overall QBER and the QBER contributions of each of the four polarization states associated with the different qubits. The measurements, obtained during six hours, show a slight variation of the QBER values associated with the individual contributions, reaching an overall QBER of 0.75%. This demonstrates the capability of the presented methods to operate, stably, with very low QBER values, making its application in practical QKD systems reliable.

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Section: Introductionmentioning

confidence: 99%

Design and implementation of a polarization-encoding system for quantum key distribution

Mantey,

Silva,

Pinto

et al. 2024

J. Opt.

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“…Therefore, the theories and methods of bifurcations along with numerical simulation techniques are inevitable tools for mathematicians, engineers, theoretical ecologists, etc. The applications in the field of dynamical systems involve physical sciences , engineering, neuroscience, mathematical biology, epidemiology,financial systems, biomedical engineering ,wave propagation , chemical kinetics, astronomy and even the more recent machine learning schemes [1][2][3][4][5][6][7][8][9][10][11][12] The study of infectious diseases is one of the old and interesting areas in mathematical biology [13,14]. Epidemic models simulate infectious diseases spread based on specific assumptions on parameters and state variables [15], and study how to eliminate and/or control disease spread.…”

Section: Introductionmentioning

confidence: 99%

On spatio-temporal dynamics of COVID-19 epidemic 𝑆𝐸_1𝐸_2𝐼_1𝐼_2𝑅𝑆 model incorporating virus mutations and vaccinations effects

Elsadany,

Aljuaidi,

Elsonbaty

et al. 2023

Electronic Journal of Mathematical Analysis and Applications

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This work is devoted to present temporal-only and spatio-temporal COVID-19 epidemic models when virus mutations and vaccination influences are considered. Firstly, the proposed non-diffusive COVID-19 model is introduced. The nonlinear incidence rate is employed to better model the strict measures forced by governmental authorities to control pandemic spread. The immunity acquired by vaccinations are assumed to be incomplete for realistic considerations. The existence, uniqueness and continuous dependence on initial conditions are studied for the solution. The study of stability along with bifurcation analysis are carried out to investigate the influences of variations in model's parameters. Moreover, the basic reproduction number is obtained for the proposed model. The stability regions for equilibrium points are depicted in space of parameters to explore their effects. Secondly, the diffusive version of the model is considered where possible occurrence of Turing instability is investigated. Finally, numerical simulations are employed to verify theoretical results of the work.

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“…By simply adjusting the operating conditions of the two lasers, including bias current, coupling strength, and detuning frequency, various dynamical behaviors can be induced, such as mutual injection locking, period-one (P1) dynamics, period-two (P2) dynamics, quasi-periodic dynamics, and chaos. The unique temporal and spectral features found in these dynamical behaviors have been proposed, respectively, to improve performance characteristics of existing technologies, such as enhancing the bandwidth of direct modulation [1][2][3][4][5] and suppressing nonlinear distortion due to direct modulation [6][7][8], or to provide alternatives for novel applications, such as tunable microwave generation [9][10][11][12], chaotic synchronization [13][14][15][16], reservoir computing [17][18][19], and decision making [20]. For these technological applications, the bias currents of the two lasers are, in general, adjusted independently and differently so that specific characteristics or functionalities are achieved.…”

Section: Introductionmentioning

confidence: 99%

Effects of Asymmetric Coupling Strength on Nonlinear Dynamics of Two Mutually Long-Delay-Coupled Semiconductor Lasers

et al. 2022

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This study investigates the effects of asymmetric coupling strength on nonlinear dynamics of two mutually long-delay-coupled semiconductor lasers through both experimental and numerical efforts. Dynamical maps and spectral features of dynamical states are analyzed as a function of the coupling strength and detuning frequency for a fixed coupling delay time. Symmetry in the coupling strength of the two lasers, in general, symmetrizes their dynamical behaviors and the corresponding spectral features. Slight to moderate asymmetry in the coupling strength moderately changes their dynamical behaviors from the ones when the coupling strength is symmetric, but does not break the symmetry of their dynamical behaviors and the corresponding spectral features. High asymmetry in the coupling strength not only strongly changes their dynamical behaviors from the ones when the coupling strength is symmetric, but also breaks the symmetry of their dynamical behaviors and the corresponding spectral features. Evolution of the dynamical behaviors from symmetry to asymmetry between the two lasers is identified. Experimental observations and numerical predictions agree not only qualitatively to a high extent but also quantitatively to a moderate extent.

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Design of parallel reservoir computing by mutually-coupled semiconductor lasers with optoelectronic feedback

Cited by 13 publications

References 36 publications

Design and implementation of a polarization-encoding system for quantum key distribution

Design and implementation of a polarization-encoding system for quantum key distribution

On spatio-temporal dynamics of COVID-19 epidemic 𝑆𝐸_1𝐸_2𝐼_1𝐼_2𝑅𝑆 model incorporating virus mutations and vaccinations effects

Effects of Asymmetric Coupling Strength on Nonlinear Dynamics of Two Mutually Long-Delay-Coupled Semiconductor Lasers

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