Electromagnetically Induced Transparency

Kowalski, Krzysztof; Long, Van Cao; Xuan, Khoa Dinh; Głódź, M.; Bang, Nguyen Huy; Szonert, J.

doi:10.12921/cmst.2010.si.02.131-145

Cited by 12 publications

(5 citation statements)

References 67 publications

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“…where, 13 ℘ is dipole moment element and based on the Hamiltonian, the equations of motion for the density matrix elements can be expressed as [22,23]:…”

Section: Electromagnetically Induced Transparency and Lwi Processmentioning

confidence: 99%

Coupling Dynamics of All-Optical Memory Cell Based on Active Micro Ring Optical Integrator with LWI and EIT Phenomena

Nasibe¹

2018

Int J Opt Photonic Eng

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The lasing without inversion phenomena in the three-level nanoparticles inserted in the micro ring resonators as the active gain medium for loss compensation in the all-optical memory unit cell is investigated. The effect of parameters such as pumping rate is analyzed. Also, the electromagnetically induced transparency effect in the three-level quantum dots is utilized as an on/off phase shifter for data reading at requested time. The optical integrator generates an optical step function to save the input data. Both the input data into the memory and the output read out are the return-to-zero Gaussian signals. Since, the light in the integrator is mostly erased during the rising edge of the phase shift pulse, the output data has the narrower pulse width. Finally, the effect of the power coupling coefficient of the directional couplers on data storage and read out process is investigated. Device minimizing for integrated purposes and high-speed data saving are the main advantages of the optical integrator-based memory.

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“…where, 13 ℘ is dipole moment element and based on the Hamiltonian, the equations of motion for the density matrix elements can be expressed as [22,23]:…”

Section: Electromagnetically Induced Transparency and Lwi Processmentioning

confidence: 99%

Coupling Dynamics of All-Optical Memory Cell Based on Active Micro Ring Optical Integrator with LWI and EIT Phenomena

Nasibe¹

2018

Int J Opt Photonic Eng

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“…Electromagnetically induced transparency (EIT) is the phenomenon where a highly opaque medium is rendered transparent to a probe beam at a resonance frequency in three-level atomic systems ( Marangos, 1998 ; Boller et al., 1991 ; Fleischhauer et al., 2005 ; Kowalski et al., 1997 ; Harris, 1996 ). The destructive quantum interference between probe and pump beam explains the phenomenon.…”

Section: Electromagnetically Induced Transparencymentioning

confidence: 99%

Toroidal electromagnetically induced transparency based meta-surfaces and its applications

2022

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Summary The vigorous research on low-loss photonic devices has brought significance to a new kind of electromagnetic excitation, known as toroidal resonances. Toroidal excitation, possessing high-quality factor and narrow linewidth of the resonances, has found profound applications in metamaterial (MM) devices. By the coupling of toroidal dipolar resonance to traditional electric/magnetic resonances, a metamaterial analogue of electromagnetically induced transparency effect (EIT) has been developed. Toroidal induced EIT has demonstrated intriguing properties including steep linear dispersion in transparency windows, often leading to elevated group refractive index in the material. This review summarizes the brief history and properties of the toroidal resonance, its identification in metamaterials, and their applications. Further, numerous theoretical and experimental demonstrations of single and multiband EIT effects in toroidal-dipole-based metamaterials and its applications are discussed. The study of toroidal-based EIT has numerous potential applications in the development of biomolecular sensing, slow light systems, switches, and refractive index sensing.

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“…In this phenomenon widely discussed in numerous studies (see, e.g., [1][2][3][4][5][6] and references cited therein), the optical properties of a medium are modified by a strong light-field coupling in such a way that the absorption of a weak incident probe light is suppressed, or the medium becomes even completely transparent to the probe light.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetically induced transparency and Autler-Townes effect in a generalized L-system: A five-level model

Żaba¹,

Long²,

Głódź³

et al. 2013

Ukr. J. Phys. Opt.

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Abstract. We calculate electric susceptibility of a laser-dressed atomic medium. The model adopted in this work refers to the experiment with cold 85 Rb atoms, where the states F′ = 1, 2, 3 of the hyperfine manifold 5P 3/2 (F′) are strongly coupled with the ground state 5S 1/2 (F = 2), and the coupling is probed by a weak probing field from the other ground-state component 5S 1/2 (F = 3). We present a five-level model in which the states F = 2, 3 and F′ = 1, 2, 3 are taken into account, while the noncoupled state F′ = 4 is neglected. The model is used as a starting point to reproduce spectral features observed in the absorption of probe light passing through a cold sample of 85 Rb atoms in a magneto-optical trap. Basing on numerical solutions of this model, we have also studied in detail the impact on the probe spectra from the presence of the state F′ = 1 to which probing is forbidden by electric-dipole transition, but coupling is allowed [see, e.g., Proc. of SPIE 8770 (2013)

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Electromagnetically Induced Transparency

Cited by 12 publications

References 67 publications

Coupling Dynamics of All-Optical Memory Cell Based on Active Micro Ring Optical Integrator with LWI and EIT Phenomena

Coupling Dynamics of All-Optical Memory Cell Based on Active Micro Ring Optical Integrator with LWI and EIT Phenomena

Toroidal electromagnetically induced transparency based meta-surfaces and its applications

Electromagnetically induced transparency and Autler-Townes effect in a generalized L-system: A five-level model

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