Enhanced refractive index without absorption in semiconductor quantum dots

Chen, Nan; Shui, Tao; Qian, Biqi; Wang, Zhiping; Yu, Benli

doi:10.1007/s11128-015-0996-y

Cited by 5 publications

(2 citation statements)

References 28 publications

(34 reference statements)

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“…Within the domain of atomic, molecular, and optical physics, the exploration of phenomena entwined with quantum coherence has captivated the scientific community for numerous years. Examples abound, encompassing intriguing occurrences such as electromagnetically induced transparency [1][2][3], the intriguing realm of slow light [4,5], the formation of ultraslow optical solitons [6][7][8], the intricate dynamics of fourwave mixing [9], optical bistability [10][11][12][13][14], the manifestation of large Kerr nonlinearity [15][16][17], and the nuanced enhancement of the refractive index [18,19]. These manifestations * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Inducing torque on molecular magnets via Laguerre Gaussian beams

Lei,

2024

Laser Phys. Lett.

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This theoretical study delves into the induction of torque by light beams carrying orbital angular momentum on single-molecule magnets (SMMs). The investigation explores the impact of decay rates, detunings, and control field intensities on the generation of light-induced torque and the resulting current flow in a ring formation. The results highlight the crucial role of the control field, showcasing its efficacy as a tool to manipulate and amplify torque at different frequencies. Detuning is identified as a critical parameter influencing the shift, slope, and emergence of multiple peaks in the torque profile. The interplay between detuning, control field intensity, and decay rates introduces a control mechanism for fine-tuning torque at distinct probe frequencies. These findings underscore the potential applications of the control field and detuning as robust tools for tailored manipulation of torque in SMMs, paving the way for advancements in controlled current flow dynamics with ring structures.

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Section: Introductionmentioning

confidence: 99%

Inducing torque on molecular magnets via Laguerre Gaussian beams

Lei,

2024

Laser Phys. Lett.

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“…We know that quantum coherence and interference are the basic mechanisms for adjusting the optical response of the medium to the driving fields [1], which leads to many interesting optical phenomena such as electromagnetically induced transparency [2][3][4], a large index of refraction without absorption [5][6][7], optical bistability [8], ultra-high optical switching [9] and so on [10][11][12][13]. Interference between three-photon and one photon excitations, and the phase control of light propagation in a four-level atomic system has been experimentally reported [14].…”

Section: Introductionmentioning

confidence: 99%

Dynamical and steady-state properties of absorption-dispersion curves in a monolayer graphene system

Ali¹,

Davani²,

Ziaie³

2019

Laser Phys.

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In this article, we discuss the dynamic and steady-state features of the absorption-dispersion of a graphene monolayer system, interacting with an elliptically polarized control and coherent pumping fields. We find that, under a proper condition of parameters selection, the absorption, dispersion and group index of the weakly probe field in a monolayer graphene system can be adjusted. We show that, under optimal conditions, the controlling of the group velocity can be possible to achieve the subluminal and superluminal light propagation. Moreover, we realize that the amplification of the probe light due to the presence and absence of population inversion can be obtained by the proper choice of controllable parameters. Our findings may be useful for high-speed optical communications based on a graphene monolayer system.

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