Double switching from normal to anomalous dispersion via trichromatic phase manipulation of electromagnetically induced transparency

Hu, Xiangming; Cheng, Guangling; Zou, Jin-hua; Li, Xing; Du, Dan

doi:10.1103/physreva.72.023803

Cited by 32 publications

(10 citation statements)

References 52 publications

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“…For the research domains of semiconductor QWs, it is more important to focus on different processes in those media with the action of coherent optical fields, and the additional coupling optical field also plays a crucial role in optical switch devices [35]. Particularly, there is growing interest in achieving observably linear and nonlinear properties in the N configuration system, for instance, the enhancement of the Kerr nonlinearity [36], cross-phase modulation [32,37,38], dispersion switching [39,40], the possibility of superluminal propagation through coherent manipulation of a Raman process [41], and so on.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear optical behavior of a four-level quantum well with coupled relaxation of optical and longitudinal phonons

et al. 2011

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We study analytically the characteristics of optical absorption and slow-light solitons in an asymmetrical fourlevel N configuration semiconductor quantum wells with the cross-coupling relaxation of longitudinal-optical phonons (CCRLOP). It is shown that, in the linear range, the electromagnetically induced transparency (EIT) depends on the coherence control of both the optical fields and the CCRLOP. A double EIT is obtained under a relatively strong optical field which is from the hole and antibonding states in the wide well. Especially, the double EIT becomes perfect under the condition of increasing the CCRLOP. In the nonlinear range, the CCRLOP has an important effect on both the amplitude and the group velocity of the solitons. The amplitude of solitons reveals parabolic changes which obtain a maximum value with the increase of CCRLOP. The group velocity of the solitons continuously slows down if there are fixed three-photon detunings. These results may have potential applications for all-optical switching and some optical information engineering in solid systems.

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Section: Introductionmentioning

confidence: 99%

Nonlinear optical behavior of a four-level quantum well with coupled relaxation of optical and longitudinal phonons

et al. 2011

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“…Figure 2(a) shows that for α c = 0.5, the probe absorption presents a sharp peak around ∆ p /γ = 0, the phenomenon is called EIA. [22][23][24]27] As the value of the coupling field increases (i.e., α c = 5.0), the probe absorption exhibits two absorption peaks and a dip around ∆ p /γ = 0, thia phenomenon is called EIT. The phenomenon can be considered as arising from the interference of the tran-sitions between dressed states…”

Section: Resultsmentioning

confidence: 99%

Subluminal to superluminal light propagation in a V-type three-level atomic system interacting with squeezed vacuum

Zhang¹,

Qu²,

Tang³

et al. 2012

Chinese Phys. B

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“…[14] It is well known that driving-field manipulations have been shown to be an effective and significant way to provide quantum coherence and interference effects. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] It is particularly important that the phase modulations of the applied fields play a crucial role in the coherent optical phenomena. [22][23][24][25][26][27][28][29][30][31] The phase-dependent electromagnetically induced transparency (EIT) and CPT have been investigated in a coherent-driving atomic system.…”

Section: Introductionmentioning

confidence: 99%

“…[15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] It is particularly important that the phase modulations of the applied fields play a crucial role in the coherent optical phenomena. [22][23][24][25][26][27][28][29][30][31] The phase-dependent electromagnetically induced transparency (EIT) and CPT have been investigated in a coherent-driving atomic system. [22][23][24][25] The atomic spontaneous emission can be effectively suppressed via the laser phases.…”

Section: Introductionmentioning

confidence: 99%

Phase-controlled coherent population trapping in superconducting quantum circuits

2015

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We investigate the influences of the-applied-field phases and amplitudes on the coherent population trapping behavior in superconducting quantum circuits. Based on the interactions of the microwave fields with a single Δ-type three-level fluxonium qubit, the coherent population trapping could be obtainable and it is very sensitive to the relative phase and amplitudes of the applied fields. When the relative phase is tuned to 0 or π, the maximal atomic coherence is present and coherent population trapping occurs. While for the choice of π/2, the atomic coherence becomes weak. Meanwhile, for the fixed relative phase π/2, the value of coherence would decrease with the increase of Rabi frequency of the external field coupled with two lower levels. The responsible physical mechanism is quantum interference induced by the control fields, which is indicated in the dressed-state representation. The microwave coherent phenomenon is present in our scheme, which will have potential applications in optical communication and nonlinear optics in solid-state devices.

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Double switching from normal to anomalous dispersion via trichromatic phase manipulation of electromagnetically induced transparency

Cited by 32 publications

References 52 publications

Nonlinear optical behavior of a four-level quantum well with coupled relaxation of optical and longitudinal phonons

Nonlinear optical behavior of a four-level quantum well with coupled relaxation of optical and longitudinal phonons

Subluminal to superluminal light propagation in a V-type three-level atomic system interacting with squeezed vacuum

Phase-controlled coherent population trapping in superconducting quantum circuits

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