Interacting double dark resonances in a hot atomic vapor of helium

A model was presented for linear susceptibility in ladder-plus-Y configuration of double quantum dot system using density matrix theory and including spontaneously generated coherence of Λ-type system. Wetting layer and quantum dot inhomogeneity were considered in the calculations, which gives a practical description of double quantum dot structures well. With increasing spontaneously generated coherence from Λ-component, the dispersion was increased and shifted under spontaneously generated coherence. The inclusion of wetting layer under spontaneously generated coherence increases gain which coincides with the published results. A possibility of slow light was predicted.

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“…Removing double-peak behavior may change the case to dark-state and the system behaves as two independent subsystems. 32…”

Section: Resultsmentioning

confidence: 99%

Spontaneously generated coherence in ladder-plus-Y double quantum dot system

Al-Nashy

Jasim

Al-Shatravi

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part N:

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“…The advantages of this approach can be fully exploited if combined with high detection efficiency on a single-particle level, as accessible with cold metastable noble gas atoms [5]. Although all species of metastable noble gas atoms [5][6][7] can be used for this purpose, additional motivation for work with neon atoms arises from the fact that single-state preparation and the preparation of coherent superposition states have been previously studied extensively with this atomic species [8,9].…”

Section: Introductionmentioning

confidence: 99%

Coherent dynamics in a five-level atomic system

Schütz

Martín²,

Laschinger³

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

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The coherent control of multi-partite quantum systems presents one of the central prerequisites in state-of-the-art quantum information processing. With the added benefit of inherent high-fidelity detection capability, atomic quantum systems in high-energy internal states, such as metastable noble gas atoms, promote themselves as ideal candidates for advancing quantum science in fundamental aspects and technological applications. Using laser-cooled neon atoms in the metastable $^3$P$_2$ state of state $1s^2 2s^2 2p^5 3s$ (LS-coupling notation) (Racah notation: $^2P_{3/2}\,3s[3/2]_2$) with five $m_F$-sublevels, experimental methods for the preparation of all Zeeman sublevels $\ket{m_J} = \ket{+2}, \ket{+1}, \ket{0}, \ket{-1}, \ket{-2}$ as well as the coherent control of superposition states in the five-level system $\ket{+2}, \ldots, \ket{-2}$, in the three-level system $\ket{+2}, \ket{+1}, \ket{0}$, and in the two-level system $\ket{+2}, \ket{+1}$ are presented. The methods are based on optimized radio frequency and laser pulse sequences. The state evolution is described with a simple, semiclassical model. The coherence properties of the prepared states are studied using Ramsey and spin echo measurements.

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“…Various aspects of the slow-light propagation and storage in a tripod medium have been theoretically studied [8][9][10][11][12][13][14]. There are numerous experimental studies of the EIT in media with the tripod level scheme [15][16][17][18][19][20], culminating in the demonstration of the storage and retrieval of light pulses at a single-photon level [21].…”

Section: Introductionmentioning

confidence: 99%

Propagation of coupled dark-state polaritons and storage of light in a tripod medium

Beck

Mazets

2017

Phys. Rev. A

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We consider the slow light propagation in an atomic medium with a tripod level scheme. We show that the coexistence of two types of dark-state polaritons leads to the propagation dynamics, which is qualitatively different from that in a Λ-medium, and allows therefore for very efficient conversion of signal photons into spin excitations. This efficiency is shown to be very close to 1 even for very long signal light pulses, which could not be entirely compressed into a Λ-medium at a comparable strength of the control field.

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Interacting double dark resonances in a hot atomic vapor of helium

Cited by 17 publications

References 31 publications

Spontaneously generated coherence in ladder-plus-Y double quantum dot system

Spontaneously generated coherence in ladder-plus-Y double quantum dot system

Coherent dynamics in a five-level atomic system

Propagation of coupled dark-state polaritons and storage of light in a tripod medium

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