Experimental distinction of Autler-Townes splitting from electromagnetically induced transparency using coupled mechanical oscillators system

Liu, Jingliang; Yang, Han; Wang, Chuan; Xu, Kun; Xiao, Jinghua

doi:10.1038/srep19040

Cited by 17 publications

(12 citation statements)

References 24 publications

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“…Hence, both PITlike peaks are mainly caused by ATS effect rather than EIT phenomenon. As explained in [32][33][34], these results indicate that the lower vertical GNR (bright-mode) is strongly coupled to the upper horizontal ribbon (dark-mode). In other words, the two GNRs lie in the strong coupling regime in which the mode splitting is mainly attributed to ATS.…”

Section: Plasmon-induced Transparencysupporting

confidence: 62%

“…To figure out if the observed PIT-like resonances in the transmission spectrum of the system are originated by EIT or Autler-Townes splitting (ATS) [32][33][34], we proceeded to the fitting of the numerical results based on the equations provided in [32][33][34] where the difference between both phenomena is highlighted. In the case when the transparency window is caused by ATS, the numerical spectrum is fitted by two Lorentzian lines having the same sign so as to signify the absence of Fano interferences.…”

Section: Plasmon-induced Transparencymentioning

confidence: 99%

“…To get a quantitative answer as to what is the origin of the PIA-like dips (EIT or ATS), we set out to perform the ATS/EIT fitting of the simulation results. Specifically, we used the equations provided in [32][33][34] for the ATS-fitting function as follows:…”

Section: Plasmon-induced Absorptionmentioning

confidence: 99%

“…It has been shown that PIA can play a significant role in the realization of THz-integrated spectral control and the design of ultra-fast optical switching [29], information storage [30] and optical buffers [31]. However, similar to electromagnetic-induced transparency (EIT), a plasmon transparency window may be observed only due to the interaction between modes that causes their splitting, a phenomenon known as Autler-Townes splitting (ATS) [32][33][34]; it consists in field-driven splitting of the optical response of the system. In particular, unlike EIT-effect no Fano interferences are involved in ATS phenomenon.…”

Section: Introductionmentioning

confidence: 99%

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Terahertz plasmon-induced transparency and absorption in compact graphene-based coupled nanoribbons

et al. 2019

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We investigate theoretically and numerically the possibility of realizing plasmon-induced transparency (PIT) and plasmoninduced absorption (PIA) in a novel compact graphene-based nanostructure. The main graphene bus waveguide is coupled to two graphene nanoribbons (GNRs). The PIT effect is obtained by setting the two GNRs in an inverted L-shape aside of the main waveguide, giving rise to lambda-like configuration in analogy with three atomic-level systems. The possibility of improving the quality factors of PIT-like resonances is shown and the associated slow light effects are showcased. The mechanism behind the observed transparency windows is related to mode splitting also known as Autler-Townes splitting phenomenon. Two PIA resonances are also demonstrated by the same system. This is achieved by inserting the two GNRs, forming an inverted T-shape, inside the main waveguide. Here the two GNRs are also set in a lambda-like configuration. We indicate the possibility of improving the Q-factor of the PIA resonances and showcase their fast light features. The PIA absorption bands are shown to be essentially caused by interference phenomena between three states as in electromagneticinduced transparency. The proposed system may help the design of tunable integrated optical devices such as sensors, filters or high speed switches.

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Section: Plasmon-induced Transparencysupporting

confidence: 62%

Section: Plasmon-induced Transparencymentioning

confidence: 99%

Section: Plasmon-induced Absorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Terahertz plasmon-induced transparency and absorption in compact graphene-based coupled nanoribbons

et al. 2019

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“…So far, we have used an universal formula to analyze our observed coherence spectra and don't attribute these spectra into EIT or ATS, which are two extremes of threelevel coherent spectroscopy. Recently, investigating on discernment between EIT and ATS has become an active topic [37,38,[44][45][46][47][48][49]. Among these work, AIC is proposed to discriminate EIT and ATS from an experimental viewpoint [37].…”

mentioning

confidence: 99%

Microwave-assisted coherent control of ultracold polar molecules with a ladder-type rotational states

Gong,

Ji,

et al. 2019

Preprint

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We report an experimental demonstration of microwave-assisted coherent control of ultracold 85 Rb 133 Cs molecules in a ladder-type configuration of rotational-state double resonances, following an observation of Rabi oscillations of the related neighbouring rotational states. The population of middle rotational states, which is coupled with a probe microwave (MW) field, can be reduced by a control MW field. Broadening of spectral splitting and shift of central frequency are observed and both are attributed to the control MW field. Applying Akaike's information criterion, we conclude that our observed coherent spectra happen near the crossover range of electromagnetically induced transparency and Aulter-Townes splitting. Our work is a significant development in microwaveassisted quantum control of ultracold polar molecules with multilevel configuration, and also offers a great potential in quantum information based on ultracold molecules.

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Fundamental Distinction of Electromagnetically Induced Transparency and Autler–Townes Splitting in Breaking the Time‐Reversal Symmetry

Ruan

et al. 2022

Laser & Photonics Reviews

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Despite the essential difference in underlying physics, electromagnetically induced transparency (EIT) and Autler–Townes splitting (ATS) are difficult to be discriminated because they cause resemble absorption and dispersion to a probe electromagnetic field. They are mainly discerned in the sense of absorption profile fitting. Here, the breakdown of the time‐reversal symmetry (TRS), namely optical nonreciprocity in the EIT and ATS configurations are experimentally observed by using warm rubidium atoms. The microscopic Doppler effect due to atomic thermal motion causes strong optical nonreciprocity to the probe field in the EIT configuration. In stark contrast, the propagation of the probe field is primarily reciprocal in the ATS configuration. The experimental observations in this study objectively distinguish the EIT and ATS effects in the fundamental physics of breaking the TRS. This experiment proves a concept of using the TRS as a testbed for discerning fundamental physical effects.

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Experimental distinction of Autler-Townes splitting from electromagnetically induced transparency using coupled mechanical oscillators system

Cited by 17 publications

References 24 publications

Terahertz plasmon-induced transparency and absorption in compact graphene-based coupled nanoribbons

Terahertz plasmon-induced transparency and absorption in compact graphene-based coupled nanoribbons

Microwave-assisted coherent control of ultracold polar molecules with a ladder-type rotational states

Fundamental Distinction of Electromagnetically Induced Transparency and Autler–Townes Splitting in Breaking the Time‐Reversal Symmetry

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