Photonic bandgap via nonlinear modulation assisted by spontaneously generated coherence

Yao, Yin-Ping; Zhang, Tong‐Yi; Kou, Jun-long; Wan, Ren-Gang

doi:10.1016/j.physleta.2013.04.013

Cited by 4 publications

(2 citation statements)

References 50 publications

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“…According to Refs. [35] and [36], when the trigger field has a large detuning, i.e., ∆ T Γ 4 (which indicates a weak interaction between the trigger field and the system), the destructive quantum interference based on SGC leads to that all the population is trapped into dark state…”

Section: Numerical Calculation and Discussionmentioning

confidence: 99%

“…[25,26] The SGC has been exploited to obtain amplification without inversion, [27,28] narrowing and quenching of spontaneous emission, [29,30] refractive index enhancement without absorption, [31] as well as coherent population transfer. [32] Recently, in many researches, people have achieved dynamically induced more PBGs [33][34][35] and electromagnetically induced gratings [36,37] as well as optical precursors [38] under the assistance of SGC. In this paper, we study the effect of SGC on the optical nonreciprocity of transmission and reflection in a moving optical lattice filled into a four-level ladder cold atoms system.…”

Section: Introductionmentioning

confidence: 99%

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Dynamically controlled optical nonreciprocity of a double-ladder system with spontaneously generated coherence in moving atomic optical lattice

et al. 2017

Chinese Phys. B

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A four-level double-ladder cold atoms system with spontaneously generated coherence trapped in a moving optical lattice is explored to achieve optical nonreciprocity. When spontaneously generated coherence (SGC) is present, the remarkable contrast optical nonreciprocity of light transmission and reflection can be generated at each induced photonic bandgap in the optical lattice with a velocity of a few m/s. However, when the SGC effect is absent, the optical nonreciprocity becomes weak or even vanishing due to the strong absorption. It is found that the optical nonreciprocity is related to the asymmetric Doppler effect in transmission and reflection, meanwhile the degree and position of optical nonreciprocity can be tuned by the SGC effect and the Rabi frequency of the trigger field.

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Section: Numerical Calculation and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamically controlled optical nonreciprocity of a double-ladder system with spontaneously generated coherence in moving atomic optical lattice

et al. 2017

Chinese Phys. B

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Swapping of optical vorticity in a three-level coherent media

Kadhim

Abbass²,

Alkaaby³

et al. 2022

Mod. Phys. Lett. B

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In this paper, we have spoken about how the superposition of two upper states and the quantum interference effect affect exchange efficiency in a V-type atomic system. We have demonstrated that the same orbital angular momentum can generate an additional signal field in response to a single optical vortex light acting on one transition of the V-type quantum system. We have also discussed about how the exchange efficiency of optical vorticity is affected by the quantum interference term, the probe’s detuning, and the superposition of the higher states. Our model is ideal for quantum information processing based on the orbital angular momentum of light due to the enhancement in exchange efficiency.

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Dynamic generation and manipulaition of electromagnetically induced 2D phtonic band-gaps

Zhang¹,

Liu²,

Ming³

et al. 2014

Acta Phys. Sin.

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We study the steady optical responses of a four-level Tripod cold 87Rb atomic system, which is driven by two mutually perpendicular strong standing-wave laser fields. It is found that satisfying the condition of a proper detuning between two strong fields, one nearly perfect structure of double photonic band-gap, where reflectivity can reach 95%, can be generated along each direction, respectively. Shifting a strong field (two strong fields) to a travelling-wave field (two travelling-wave fields), we can achieve a reflectivity platform and a transmissivity window (two transmissivity windows). Our new findings are beneficial to a novel all-optical switching and routing, which may have applications in complex all-optical information networks.

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Photonic bandgap via nonlinear modulation assisted by spontaneously generated coherence

Cited by 4 publications

References 50 publications

Dynamically controlled optical nonreciprocity of a double-ladder system with spontaneously generated coherence in moving atomic optical lattice

Dynamically controlled optical nonreciprocity of a double-ladder system with spontaneously generated coherence in moving atomic optical lattice

Swapping of optical vorticity in a three-level coherent media

Dynamic generation and manipulaition of electromagnetically induced 2D phtonic band-gaps

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