Phase control of group velocity via Fano-type interference in a triple semiconductor quantum well

Yang, Wen-Xing; Ma, Wenhui; Long, Yang; Zhang, Guorui; Lee, Ray-Kuang

doi:10.1016/j.optcom.2014.03.071

Cited by 18 publications

(8 citation statements)

References 46 publications

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“…On the other hand, optical properties of semiconductor quantum wells (SQWs) or quantum dots (SQDs) are well studied due to their large electric dipole, high nonlinearity and flexible designed [29][30][31][32][33][34] . The theory of quantum coherence phenomena in SQDs has been discussed by Chow et al 35 .…”

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confidence: 99%

Tunneling induced two-dimensional phase grating in a quantum well nanostructure via third and fifth orders of susceptibility

Vafafard

Sahrai

Hamedi

et al. 2020

Sci Rep

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We study the nonlinear optical properties in an asymmetric double AlGaAs/GaAs quantum well nanostructure by using an external control field and resonant tunneling effects. It is found that the resonant tunneling can modulate the third-order and fifth-order of susceptibilities via detuning frequency of coupling light. In presence of the resonant tunneling and when the coupling light is in resonance with the corresponding transition, the real parts of third-order and fifth-order susceptibilities are enhanced which are accompanied by nonlinear absorption. However, in off-resonance of coupling light, real parts of third-order and fifth-order susceptibilities enhance while the nonlinear absorption vanishes. We investigate also the two-dimensional electromagnetically induced grating (2D-EIG) of the weak probe light by modulating the third-order and fifth-order susceptibilities. In resonance of coupling light, both amplitude and phase grating are formed in the medium due to enhancement of third-order and fifth-order probe absorption and dispersion. When the coupling light is out of resonance, most of probe energy is transferred from zero-order to higher-order directions due to resonant tunneling effect. The efficiency of phase grating for third-order of susceptibility is higher than phase grating for fifthorder susceptibility. Our proposed model may be useful for optical switching and optical sensors based on semiconductor nanostructures.

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confidence: 99%

Tunneling induced two-dimensional phase grating in a quantum well nanostructure via third and fifth orders of susceptibility

Vafafard

Sahrai

Hamedi

et al. 2020

Sci Rep

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“…[39,81,82] Recently, numerous studies of subluminal and superluminal light have been reported, [83][84][85] and practical device applications are suggested in optical processing and quantum manipulations, such as optical buffer, switching and storage devices. [86][87][88][89][90] In the following, numerical results are presented. The properties of absorption (Fig.…”

Section: Resultsmentioning

confidence: 99%

Role of incoherent pumping and Er ³⁺ ion concentration on subluminal and superluminal light propagation in Er ³⁺ -doped YAG crystal

Asadpour

Soleimani

2015

Chinese Phys. B

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We study the absorption-dispersion process and group index of weak probe field in a four-level Er 3+ :YAG crystal. We find that the Er 3+ ion concentration and incoherent pumping field can influence the absorption-dispersion process and group index of weak probe field. Moreover, our results show that Er 3+ ion concentration plays a major role in lasing without inversion and absorption with inversion.

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“…It has been shown that for the modification and adjustment of the optical properties of quantum systems, quantum coherence and interference have fundamental roles. The optical features of many quantum systems in atom-field interaction have been discussed by many groups [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. For example, in a five-level atomic medium, the generation of three coupled optical solitons was discussed by Yang et al [17].…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon assisted superluminal light propagation in a quantum dot–metallic nanoparticle hybrid system

Solookinejad¹

2018

Laser Phys.

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We study the optical properties of a coupled quantum dot (QD)-metallic nanoparticle (MNP) hybrid system via a quantum mechanical density matrix method. The QD system is considered as a three-level V-type configuration and is interacted with a weak probe light and a strong coupling light. The QD is placed near the MNP system and therefore the transition is interacted with a probe laser located near to the frequency of the MNP. We realize that due to the radius of the MNP and surface plasmon effects, the distance between the QD and MNP can optimize the absorption, dispersion, and group index of the hybrid system. We find that the probe amplification without population inversion can be obtained with a suitable distance between the QD and MNP. Moreover, a tunable superluminal light propagation is obtained for some parametric conditions of the hybrid system.

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Phase control of group velocity via Fano-type interference in a triple semiconductor quantum well

Cited by 18 publications

References 46 publications

Tunneling induced two-dimensional phase grating in a quantum well nanostructure via third and fifth orders of susceptibility

Tunneling induced two-dimensional phase grating in a quantum well nanostructure via third and fifth orders of susceptibility

Role of incoherent pumping and Er ³⁺ ion concentration on subluminal and superluminal light propagation in Er ³⁺ -doped YAG crystal

Surface plasmon assisted superluminal light propagation in a quantum dot–metallic nanoparticle hybrid system

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Phase control of group velocity via Fano-type interference in a triple semiconductor quantum well

Cited by 18 publications

References 46 publications

Tunneling induced two-dimensional phase grating in a quantum well nanostructure via third and fifth orders of susceptibility

Tunneling induced two-dimensional phase grating in a quantum well nanostructure via third and fifth orders of susceptibility

Role of incoherent pumping and Er 3+ ion concentration on subluminal and superluminal light propagation in Er 3+ -doped YAG crystal

Surface plasmon assisted superluminal light propagation in a quantum dot–metallic nanoparticle hybrid system

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Role of incoherent pumping and Er ³⁺ ion concentration on subluminal and superluminal light propagation in Er ³⁺ -doped YAG crystal