Limiting effects of geometrical and optical nonlinearities on the squeezing in optomechanics

Djorwé, Philippe; Engo, S. G. Nana; Mbé, Jimmi Herve Talla; Woafo, P.

doi:10.1016/j.physb.2013.04.037

Cited by 10 publications

(7 citation statements)

References 29 publications

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“…The own definition of nonlinear optical effect had its upgrading, and nowadays is referred to as the interaction between materials and high-intense electromagnetic field brought about from high-power laser pulse changes in the input optical parameters such as frequency and swing. Nonlinear optical (NLO) materials based on the above optical response have an important application in the manipulation of optical signals in optical communication and other optical signal processes and mechanisms. − …”

Section: Introductionmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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Section: Introductionmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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“…By introducing the vector of quadrature fluctuations u(t) = (δx m (t), δp m (t), δI(t), δϕ(t)) T and the vector of noises n(t) = (0, F th (t), √ κδI in (t), √ κδϕ in (t)) T [32], the linearized QLEs can be written in compact form…”

Section: Model and Dynamics Equationsmentioning

confidence: 99%

“…It is noteworthy that the dynamics of the purely harmonic quantum system is analogous to its classical dynamics, in the sense that expectation values of canonical observables follow the classical equations of motion. Indeed, stiffening geometrical nonlinearity has being used to squeeze the mechanical mode in optomechanical systems [30] and for both quantum control and quantum information processing [29] whereas softening nonlinearity is shown as a factor that limits some quantum effects in optomechanics [31,32].…”

Section: Introductionmentioning

confidence: 99%

Robustness of continuous-variable entanglement via geometrical nonlinearity

2014

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We propose a scheme to generate robust stationary continuous-variable entanglement in optomechanical systems, based on geometrical nonlinearity that occurs for large mechanical displacements. Such nonlinearity is often used to correct the dynamics of the systems in the strong coupling regime. It appears that geometrical nonlinearity enhances the entanglement and shifts its maximum towards high detuning values. Using the experimental parameters, we find that such a scheme generates a very robust entanglement against thermal decoherence even at room temperature. Our results show that geometrical nonlinearity affects entanglement as the optomechanical quantum interface.

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“…Optomechanical systems have become one of the most attractive topical research subjects in light-matter interactions, from a fundamental viewpoint and in terms of numerous applications (see Ref. [1] for a review) such as entanglement, [2,3] squeezing states, [4][5][6] normal mode splitting, [7,8] gravitational wave detection, [9] precision measurement, detection, and sensing. [10][11][12][13][14] Recently, their scope of application has widened to include slow and fast light generation through the concept of optomechanically induced transparency (OMIT).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

et al. 2023

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We theoretically study the effect of the quadratic coupling strength on optomechanical systems subjected to a continuous external force. Quadratic coupling strength originates from strong coupling between the optical and the mechanical degrees of freedom. We show that the quadratic coupling strength reduces the amplitude of the dispersion spectra at the resonance in both blue- and red-sideband regimes. But, it increases (decreases) the amplitude of the absorption spectrum in the blue (red) sideband regime. Besides, in both sideband regimes, the effective detuning between the pump and the cavity deviates with the quadratic coupling strength. Thereby, for an appropriate selection of that quadratic coupling strength, it results in an important magnification (in absolute value) of the group delay for both slow and fast lights exiting from the optomechanical cavity.

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Limiting effects of geometrical and optical nonlinearities on the squeezing in optomechanics

Cited by 10 publications

References 29 publications

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Robustness of continuous-variable entanglement via geometrical nonlinearity

Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

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