Control of Fano resonances and slow light using Bose-Einstein condensates in a nanocavity

Akram, M. Javed; Ghafoor, Fazal; Khan, M. Miskeen; Saif, Farhan

doi:10.1103/physreva.95.023810

Cited by 37 publications

(27 citation statements)

References 155 publications

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“…It is clear from Figure 8a, Fano resonance has a single EIT window profile. This result is similar to the previous study delivered in simple cavity system [36]. The single Fano profile of the absorption spectrum splits into double and triple EIT windows once we introduce g bc and g c as shown in Figures 8b and 8c.…”

Section: Resultssupporting

confidence: 90%

“…The physical mechanism of the Fano profile is the quantum interferences between two states [35]. Fano resonances have many potential applications in quantum interacting systems such as slow and fast light effects [36], the plasmonic [37,38], and the understanding of the structure and dynamical properties of the atoms and molecules [39]. In an optomechanical system, Fano resonance has been introduced by Qu and Agarwal in [40] and further discussed in a hybrid optomechanical system in [41].…”

Section: Introductionmentioning

confidence: 99%

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Control of electromagnetically induced transparency and Fano resonances in a hybrid optomechanical system

Ullah

2019

Eur. Phys. J. D

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We study the control of electromagnetically induced transparency and Fano resonances in a hybrid optomechanical system based on Bose-Einstein condensate trapped inside a high finesse Fabry Pérot cavity coupled with two charged nanomechanical resonators. The system is driven by a pump field and probed by a probe field. The nanomechanical resonators are connected to an external bias voltage V1(−V2) and generated electrostatic Coulomb coupling gc. In this study, we show that the electromagnetically induced transparency can be controlled by the s-wave scattering frequency ωsw as well as by the coupling frequencies of the system. Further, studying the effect of Bogoliubov mode, the transparency window splits from double to triple windows. At strong atom-atom interaction, we explain the asymmetric windows' and explain their physical understanding.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Control of electromagnetically induced transparency and Fano resonances in a hybrid optomechanical system

Ullah

2019

Eur. Phys. J. D

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“…The Fano resonance and EIT-like (or EIABS-like) line shapes are not only experimentally observed in quantum systems but also in various classical harmonic-resonator systems. Quantum examples include quantum dots [5], quantum wells [6], superconducting qubits [7][8][9][10], as well as Bose-Einstein condensates [11]. Classical examples [12] include coupled optical cavities [13][14][15][16], terahertz resonators [17,18], microwave resonators [19,20], mechanical resonators [21,22], optomechanical systems [23].…”

Section: Introductionmentioning

confidence: 99%

Phase-Controlled Pathway Interferences and Switchable Fast-Slow Light in a Cavity-Magnon Polariton System

Jie

et al. 2021

Phys. Rev. Applied

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We study the phase-controlled transmission properties in a compound system consisting of a threedimensional copper cavity and an yttrium-iron-garnet (YIG) sphere. By tuning the relative phase of the magnon pumping and cavity-probe tones, constructive and destructive interferences occur periodically, which strongly modify both the cavity-field transmission spectra and the group delay of light. Moreover, the tunable amplitude ratio between pump-probe tones allows us to further improve the signal absorption or amplification, accompanied by either significantly enhanced optical advance or delay. Both the phase and amplitude ratio can be used to realize in situ tunable and switchable fast-slow light. The tunable phase and amplitude ratio lead to the zero reflection of the transmitted light and an abrupt fast-slow light transition. Our results confirm that direct magnon pumping through the coupling loops provides a versatile route to achieve controllable signal transmission, storage, and communication, which can be further expanded to the quantum regime, realizing coherent-state processing or quantum-limited precise measurements.

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“…The mechanical characteristics of light in optomechanical system [17][18][19][20][21][22][23][24][25] yield to phonon induced transparencies [26,27], which can be referred as optomechanically induced transparency (OMIT) [28,29]. The coupling produced by the mechanical effects of light between multiple oscillators, notably mirrors and ultra-cold atomic states, further lead to the concept of multiple EITs [30][31][32][33][34]. These transparencies occur because of quantum interferences in multiple transitional pathways at intermediate states of the system.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetically Induced Transparencies with Two Transverse Bose-Einstein Condensates in a Four-Mirror Cavity

Yasir,

Liang,

Xianlong

et al. 2020

Preprint

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We investigate electromagnetically induced transparencies with two transverse Bose-Einstein condensates in four-mirror optical cavity, driven by a strong pump laser and a weak probe laser. The cavity mode, after getting split from beam splitter, interacts with two independent Bose-Einstein Condensates transversely trapped in the arms of the cavity along x-axis and y-axis. The interaction of intra-cavity optical mode excites momentum side modes in Bose-Einstein Condensates, which then mimic as two atomic mirrors coupled through cavity field. We show that the probe field photons transition through the atomic mirrors yields to two coupled electromagnetically induced transparency windows, which only exist when both atomic states are coupled with the cavity. Further, the strength of these novel electromagnetically induced transparencies gets increased with an increase in atom-cavity coupling. Furthermore, we investigate the behavior of Fano resonances and dynamics of fast and slow light. We illustrate that the Fano line shapes and dynamics of slow light can be enhanced by strengthening the interaction between atomic states and cavity mode. Our findings not only contribute to the quantum nonlinear optics of complex systems but also provide a platform to test multi-dimensional atomic states in a single system.

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Control of Fano resonances and slow light using Bose-Einstein condensates in a nanocavity

Cited by 37 publications

References 155 publications

Control of electromagnetically induced transparency and Fano resonances in a hybrid optomechanical system

Control of electromagnetically induced transparency and Fano resonances in a hybrid optomechanical system

Phase-Controlled Pathway Interferences and Switchable Fast-Slow Light in a Cavity-Magnon Polariton System

Electromagnetically Induced Transparencies with Two Transverse Bose-Einstein Condensates in a Four-Mirror Cavity

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