Phonon induced phase grating in quantum dot system

Cheng, Guangling; Zhong, Wenxue; Chen, Ai-Xi

doi:10.1364/oe.23.009870

Cited by 42 publications

(23 citation statements)

References 45 publications

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“…More specifically, EIG in terms of spatially modulated EIT or DEIT has been analyzed in Refs. 4 – 8 , 13 , 14 , 18 , 20 , 22 – 25 and EIG based on EIA has been explained in Ref. 5 , 17 .…”

Section: Introductionmentioning

confidence: 98%

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Dutta¹,

Panchadhyayee

Bayal

et al. 2020

Sci Rep

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We propose an atomic model in close-loop configuration, which exhibits controllable symmetric and asymmetric evolution of significantly enhanced diffraction peaks of the weak probe beam in an opto-atomic grating at far-field regime. Such results are obtained by the linear and nonlinear modulation of the intensities of the diffraction peaks as a result of multi-wave-mixing-induced modification of spatially modulated coherence in a closed four-level atomic system. Novelty of the results lies in predicting the diffraction pattern with uniform peak height due to the dominance of the amplitude part of the grating-transfer-function at the condition of exact atom-field resonance, which is unique to the present model. Efficacy of the present scheme is to apply it in producing nonlinear light generated by four-wave-mixing-induced control of spatially modulated coherence effect. The work also finds its importance for its applicability in the field of all-optical devices.

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Section: Introductionmentioning

confidence: 98%

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Dutta¹,

Panchadhyayee

Bayal

et al. 2020

Sci Rep

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show abstract

“…The populations are shown in Figure 7(b) as a function of the square root of the pre-pulse power

, which is proportional to the pulse area. The populations clearly display Rabi oscillations (experiment and theory indicated by the points and curves, respectively), which usually require isolation of single QDs to avoid the detrimental effects of inhomogeneity [ 97 – 101 ].…”

Section: Semiconductor Quantum Dotsmentioning

confidence: 99%

Advances in multi-dimensional coherent spectroscopy of semiconductor nanostructures

Cundiff

2017

Advances in Physics: X

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Multi-dimensional coherent spectroscopy (MDCS) has become an extremely versatile and sensitive technique for elucidating the structure, composition, and dynamics of condensed matter, atomic, and molecular systems. The appeal of MDCS lies in its ability to resolve both individual-emitter and ensemble-averaged dynamics of optically created excitations in disordered systems. When applied to semiconductors, MDCS enables unambiguous separation of homogeneous and inhomogeneous contributions to the optical linewidth, pinpoints the nature of coupling between resonances, and reveals signatures of many-body interactions. In this review, we discuss the implementation of MDCS to measure the nonlinear optical response of excitonic transitions in semiconductor nanostructures. Capabilities of the technique are illustrated with recent experimental studies that advance our understanding of optical decoherence and dissipation, energy transfer, and many-body phenomena in quantum dots and quantum wells, semiconductor microcavities, layered semiconductors, and photovoltaic materials.

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“…The basic Λ EIG scheme has been expanded to other multi-level schemes such as ∨ [12] and Ξ excitations [13]. Phase-controlled EIG can be realized in symmetric and asymmetric double and triple quantum wells and quantum dot systems [14][15][16], with efficiency, was enhanced via microwave modulation [17], and parity-time symmetry [18,19]. Theoretical schemes about EIG with PT symmetry were proposed in…”

Section: Introductionmentioning

confidence: 99%

Effect of composite vortex beam on a two-dimensional gain assisted atomic grating

2023

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We propose an atomic grating based on an electromagnetically induced transparency phenomenon that switches between zeroth-order diffraction to a distinct higher-order diffraction pattern by driving a planar gaseous medium of a four-level tripod ($\pitchfork$) atoms with three laser beams: modulation of standing wave (SW) control beam propagating nearly perpendicular to the planar medium, while vortex and weak plane probe beams directed perpendicular to the medium. We numerically investigate the behavior of the amplitude, phase modulations, and probe field diffraction intensities of different orders by the variation of the field detunings and orbital angular momentum number (OAM) of the composite vortex light beam. Specifically, in the off-resonant case, the interplay between a square lattice of the control and an additional spatial variation of the vortex beam allows the emergence of higher diffraction orders and variable gain due to double transparency windows in this complex optical system. We believe that our proposed scheme might be useful in optical memory devices via the storage of information to diffraction orders of the atomic grating.

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Phonon induced phase grating in quantum dot system

Cited by 42 publications

References 45 publications

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Advances in multi-dimensional coherent spectroscopy of semiconductor nanostructures

Effect of composite vortex beam on a two-dimensional gain assisted atomic grating

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