Image information transfer via electromagnetically induced transparency-based slow light

Wang, Xiaoxiao; Sun, Jiaxiang; Sun, Yuan-Hang; Li, Aijun; Chen, Yi; Zhang, Xiaojun; Kang, Zhi‐Hui; Wang, Lei; Wang, Haihua; Gao, Jin‐Yue

doi:10.1088/1674-1056/24/7/074204

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…[1][2][3] This results in a narrow window in the transmission spectrum. The plasmoninduced transparency (PIT), an EIT-like effect, has attracted attention due to its significant advantages and wide practical applications, [4,5] such as in sensors, [6][7][8][9] optical storage, [10][11][12] optical switches, and so on. [13][14][15][16] However, for metal metamaterials, once the PIT devices have been fabricated, the transmission window is very difficult to tune except by accurately changing the geometry of structures, which limits the performance and repeatability of designated PIT sample.…”

Section: Introductionmentioning

confidence: 99%

Tunable plasmon-induced transparency based on asymmetric H-shaped graphene metamaterials

et al. 2018

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We propose and numerically demonstrate a tunable plasmon-induced transparency (PIT) phenomenon based on asymmetric H-shaped graphene metamaterials. The tunable PIT effect is realized through varying the applied polarization angles rather than changing the structure geometry. By simply adjusting the polarization angle, the transmission spectra can be controlled between the switch-on state and switch-off state. The physical mechanism of the induced transparency is revealed from magnetic dipole inductive coupling and phase coupling. Importantly, by varying the Fermi energy of the graphene or the refractive index of the substrate, the resonant position of the PIT can be dynamically controlled and the maximum modulation depths can reach up to 60.7%. The sensitivity (nm/RIU) of the graphene structure, which is the shift of resonance wavelength per unit change of refractive index, is 5619.56 nm/RIU. Moreover, we also extend our research to the x-axis symmetric H-shaped structure, and the tunable PIT transmission window can also be realized. The physical mechanism of the induced transparency is revealed from the electric dipole hybridization coupling. Our designed H-shaped graphene-based structures is a promising candidate for compact elements such as tunable sensors, switches and slow-light devices.

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Section: Introductionmentioning

confidence: 99%

Tunable plasmon-induced transparency based on asymmetric H-shaped graphene metamaterials

et al. 2018

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“…Earlier schemes include measurement of the phase shift of the standing wave, [9][10][11] the entanglement between the atom's position and its internal states, [12,13] and resonance imaging methods. [14,15] On the other hand, in quantum optics and laser physics, atomic coherence and quantum interference can lead to a lot of interesting phenomena such as coherent population trapping (CPT), [16] electromagnetically induced transparency (EIT), [17][18][19][20][21][22][23] the modification of spontaneous emission, [24][25][26] giant Kerr nonlinearity, [27,28] quantum entanglement, etc. [29][30][31] In recent years, varieties of atomic systems were studied to realize one-dimensional (1D) atomic localization based on atomic coherence and quantum interference.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional atom localization induced by a squeezed vacuum

Wang

2016

Chinese Phys. B

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A scheme of two-dimensional (2D) atom localization induced by a squeezed vacuum is proposed, in which the threelevel V-type atoms interact with two classical standing-wave fields. It is found that when the environment is changed from an ordinary vacuum to a squeezed vacuum, the 2D atom localization is realized by detecting the position-dependent resonance fluorescence spectrum. For comparison, we demonstrate that the atom localization originating from the quantum interference effect is distinct from that induced by a squeezed vacuum. Furthermore, the combined effects of the squeezed vacuum and quantum interference are also discussed under appropriate conditions. The internal physical mechanism is analyzed in terms of dressed-state representation.

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Superluminal and slow light of high-order harmonic for rectangle signal in erbium-doped fiber

Wang¹,

Wang²,

Chong-Qing³

et al. 2015

Acta Phys. Sin.

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The slow light technology of the rectangle signal propagating in erbium-doped fiber (EDF) has potential applications in the fields of all optical communication and optical fiber sensing. The method of using harmonics fractional delay to evaluate the slow/fast light of rectangle signal propagating in the EDF is proposed, and the characteristics of phase delay for fundamental and high order harmonics components are analyzed for the first time based on the rate equations and the theory of the coherent population oscillations (CPO). We experimentally demonstrate the dependences of fundamental fractional delay on input power and optical gain. The maximum fractional delay 20% is obtained when the input power is about 8 mW without pump. The negative fractional delay-20% is also achieved and it will increase with the rising of the optical gain. The Nth-order fractional delays (N=1, 3, 5, 7) of rectangle signal propagating in EDF without pump are investigated. Their maximum fractional delays are all about 0.07 and the corresponding fundamental modulation frequencies are 22, 7, 5 and 3 Hz, respectively. What is more, the Nth-order fractional delays (N=1, 3, 5, 7) with pump are also investigated. Their maximum fractional delays are all about-0.135 and the corresponding fundamental modulation frequencies are 175, 58, 35 and 25 Hz, respectively. The experiments indicate that the maximum Nth-order fractional delays are equal and they will be achieved at the frequency f/N (the fundamental harmonic fractional delay is maximum at the modulation frequency f). The results show good agreement with CPO and the frequency is also located in the spectral burning hole.

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Image information transfer via electromagnetically induced transparency-based slow light

Cited by 4 publications

References 25 publications

Tunable plasmon-induced transparency based on asymmetric H-shaped graphene metamaterials

Tunable plasmon-induced transparency based on asymmetric H-shaped graphene metamaterials

Two-dimensional atom localization induced by a squeezed vacuum

Superluminal and slow light of high-order harmonic for rectangle signal in erbium-doped fiber

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