EIT-assisted large cross-Kerr nonlinearity in a four-level inverted-Y atomic system

Kou, Jun-long; Wan, Ren-Gang; Kang, Zhi‐Hui; Wang, H. H.; Li, Jiang; Zhang, X. J.; Jiang, Yun; Gao, Jin

doi:10.1364/josab.27.002035

Cited by 41 publications

(19 citation statements)

References 30 publications

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“…Extension from a single-to a multiwindow EIT medium having an enhanced Kerr nonlinearity is, therefore, of extensive interest. Particularly, four-level systems were proposed to enhance cross-Kerr [4,[10][11][12][13][14] and self-Kerr [15,16] nonlinearity. Recently, fivelevel EIT configurations have also been introduced [17,18] that show a basic change of linear absorption and dispersion.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of self-Kerr nonlinearity via electromagnetically induced transparency in a five-level cascade system: an analytical approach

Khoa

Doai

Son³

et al. 2014

J. Opt. Soc. Am. B

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We propose to use a five-level cascade system to enhance self-Kerr nonlinearity under an electromagnetically induced transparency (EIT) condition. Using density-matrix theory, an expression of the self-Kerr nonlinear coefficient for a weak probe light is derived. Variations of the self-Kerr coefficient with respect to the frequency and intensity of a strong coupling light are investigated. The Kerr nonlinearity is basically modified and enhanced greatly in the spectral regions corresponding to EIT transparent windows. Furthermore, the sign, slope, and magnitude of the self-Kerr coefficient can be controlled with the frequency and intensity of the coupling light. Such a controllable Kerr nonlinearity can find interesting applications in optoelectronic devices working with low light intensity at multiple frequencies.

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Section: Introductionmentioning

confidence: 99%

Enhancement of self-Kerr nonlinearity via electromagnetically induced transparency in a five-level cascade system: an analytical approach

Khoa

Doai

Son³

et al. 2014

J. Opt. Soc. Am. B

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“…Generally speaking, a typical OMIT-like transmission rate corresponds to such a one with a transparency window and two sideband dips in frequency domain. It takes on, however, a significant difference with inverted-OMIT phenomenon in which corresponding transmission rate exhibits a transmission dip and two sideband peaks 30 44 45 46 .…”

Section: Discussionmentioning

confidence: 99%

Parity-time-symmetry enhanced optomechanically-induced-transparency

Jiang

et al. 2016

Sci Rep

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We propose and analyze a scheme to enhance optomechanically-induced-transparency (OMIT) based on parity-time-symmetric optomechanical system. Our results predict that an OMIT window which does not exist originally can appear in weak optomechanical coupling and driving system via coupling an auxiliary active cavity with optical gain. This phenomenon is quite different from these reported in previous works in which the gain is considered just to damage OMIT phenomenon even leads to electromagnetically induced absorption or inverted-OMIT. Such enhanced OMIT effects are ascribed to the additional gain which can increase photon number in cavity without reducing effective decay. We also discuss the scheme feasibility by analyzing recent experiment parameters. Our work provide a promising platform for the coherent manipulation and slow light operation, which has potential applications for quantum information processing and quantum optical device.

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“…(g F =2/5) [48,49]. Generally speaking, the coefficients in equation (10) are complex which is difficult to support the stable nonlinear localized solutions.…”

Section: Giant Kerr Effect and Ultraslow Matched Group Velocitiesmentioning

confidence: 99%

Manipulation of a weak signal pulse by optical soliton via double electromagnetically induced transparency

et al. 2019

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We propose a scheme to realize the manipulation of a weak signal pulse by ultraslow optical soliton in a coherent inverted-Y-type atomic system via double electromagnetically induced transparency (EIT). Based on Maxwell-Bloch equations, we derive nonlinear equations governing the spatial-temporal evolution of the probe and signal pulse envelopes. We show the giant enhancement of optical Kerr nonlinearity can be obtained under the condition of the double EIT, which results in the generation of a (2+1)-dimension optical soliton and can realize the manipulation of a weak signal pulse. Applying a far-detuned laser field to the system, we find that a weak signal pulse can be trapped by a (3+1)dimension light bullet. In particular, the trajectories of the light bullet and trapped signal pulse can be manipulated and controlled by introducing a Stern-Gerlach gradient magnetic field. The results predicted here may not only open a route for the study of weak-light nonlinear optics but also have potential applications in the precision measurements and optical information processing and transmission.

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EIT-assisted large cross-Kerr nonlinearity in a four-level inverted-Y atomic system

Cited by 41 publications

References 30 publications

Enhancement of self-Kerr nonlinearity via electromagnetically induced transparency in a five-level cascade system: an analytical approach

Enhancement of self-Kerr nonlinearity via electromagnetically induced transparency in a five-level cascade system: an analytical approach

Parity-time-symmetry enhanced optomechanically-induced-transparency

Manipulation of a weak signal pulse by optical soliton via double electromagnetically induced transparency

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