INSTABILITIES AND METASTABLE CHAOS IN A TWO-MODE LASER

The dynamics of homogeneously broadened ring lasers supporting two transverse modes is numerically studied. The regimes with periodic and chaotic intensity pulsations have been obtained for lasers having both fast and slow-response relaxation of the population inversion. A phenomenon of metachaos has been found and statistical properties of metastable chaotic states and their dependence on system parameters have been studied.

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Statistical properties of single-mode and two-mode ring lasers

Physics Reports ◽

10.1016/0370-1573(84)90089-9 ◽

1984 ◽

Vol 108 (4) ◽

pp. 217-273 ◽

Cited By ~ 50

Author(s):

Surendra Singh

Keyword(s):

Single Mode ◽

Statistical Properties ◽

Ring Lasers

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CHAOTIFICATION OF SPATIOTEMPORAL SYSTEMS

International Journal of Bifurcation and Chaos ◽

10.1142/s0218127410027027 ◽

2010 ◽

Vol 20 (07) ◽

pp. 2193-2202 ◽

Cited By ~ 3

Author(s):

PING LI ◽

ZHONG LI ◽

WOLFGANG A. HALANG

Keyword(s):

Chaos Control ◽

Chaotic Systems ◽

Sufficient Conditions ◽

Spatiotemporal Chaos ◽

Statistical Properties ◽

Rigorous Proof ◽

System Parameters ◽

Simulation Results ◽

Random Bit Generators

Spatiotemporal chaotic systems have been applied to design pseudo-random-bit generators or ciphers for better cryptographic performance, where spatiotemporal chaos is desirable. This paper presents a chaotification method (or anti-chaos control) for creating spatiotemporal systems, which are originally either nonchaotic or chaotic, strongly chaotic. Sufficient conditions on the system parameters for chaotification are obtained. A mathematically rigorous proof shows that the chaotified system satisfying the parameter conditions is chaotic in the sense of Li–Yorke and Devaney, respectively. Moreover, the chaotification method is applicable to other spatiotemporal systems even with different configurations. Simulation results have illustrated the effectiveness of the proposed chaotification method. Additionally, the statistical properties of the spatiotemporal systems and their chaotified counterparts are analyzed and compared, showing that the chaotification method endows the spatiotemporal systems with good statistical properties. Therefore, the chaotification method can be used for applications of spatiotemporal systems in cryptography.

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Quantum correlation and non-classical properties in semiconductor microcavities for multi-photon excitation

International Journal of Quantum Information ◽

10.1142/s0219749919500473 ◽

2019 ◽

Vol 17 (05) ◽

pp. 1950047

Author(s):

S. Abdel-Khalek ◽

K. Berrada ◽

H. Eleuch

Keyword(s):

Quantum Correlation ◽

Emission Rate ◽

Statistical Properties ◽

Spontaneous Emission Rate ◽

System Parameters ◽

Physics Community ◽

Photon Excitation ◽

Mandel’S Parameter ◽

Dynamics Of Correlations ◽

Semiconductor Microcavities

We study how the interplay of weak excitation regime of quantum well confined in a semiconductor microcavity affects the dynamics of correlations and the statistical properties of photons. We discuss how the system parameters can impact the quantum entropy and Mandel’s parameter, and illustrate our concerns with numerical simulations. We have found that the enhancement of the correlations and the control of the statistical properties of photons in semiconductor microcavities for multi-photon excitation highly benefits from the combination of the strength of the field, excitonic spontaneous emission rate, cavity dissipative rate, and the coupling between the exciton and photons. Our results may have important implications not only for those specially interested in quantum optics and information, but also for the general physics community.

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