scholarly journals An efficient optical knob from slow light to fast light in a coupled nanomechanical resonator-quantum dot system

2009 ◽  
Vol 17 (22) ◽  
pp. 19874 ◽  
Author(s):  
Jin-Jin Li ◽  
Ka-Di Zhu
Keyword(s):  
Quantum Dot ◽  
Slow Light ◽  
Nanomechanical Resonator ◽  
Fast Light

Infrared control of slow light in a slab doped by InGaN/GaN quantum dot nanostructure

2015 ◽  
Vol 29 (05) ◽  
pp. 1550012
Author(s):  
Hossein Jafarzadeh ◽  
Elnaz Ahmadi Sangachin ◽  
Seyyed Hossein Asadpour
Keyword(s):  
Quantum Dot ◽  
Communication Systems ◽  
Light Propagation ◽  
Slow Light ◽  
Optical Systems ◽  
Proposed Model ◽  
Ultrahigh Density ◽  
Fast Light ◽  
Slow And Fast Light ◽  
Signal Field

In this paper, we proposed a model for controlling the group velocity of the transmitted and reflected pulses in a slab medium doped by four-level quantum dot nanostructure. Here, an infrared signal field interacted by quantum dot nanostructure can affect the behavior of reflected and transmitted pulses. We show that in the presence and absence of infrared pulses, the other controllable parameters have essential roles for controlling the slow and fast light propagation through the medium. Moreover, we found that the simultaneous slow and fast light can be obtained for the transmitted and reflected pulses by infrared signal field. Our proposed model may be useful for ultrahigh density optical memories in quantum communication systems or in various fields of all-optical systems.

From fast light to slow light in resonantly driven quantum dot systems

2013 ◽  
Vol 298-299 ◽  
pp. 176-179 ◽  
Author(s):  
Chunchao Yu ◽  
Tao Wang ◽  
Wei Yan ◽  
Xiaoming Li
Keyword(s):  
Quantum Dot ◽  
Slow Light ◽  
Fast Light

scholarly journals Controllable Fast and Slow Light in the Hybrid Nanomechanical Resonator System

2021 ◽  
Author(s):  
Hua-Jun Chen
Keyword(s):  
Absorption Spectra ◽  
Slow Light ◽  
Fano Resonances ◽  
Light Effect ◽  
Probe Field ◽  
Nanomechanical Resonator ◽  
Phase Dispersion ◽  
Resonator System ◽  
Fast Light ◽  
Slow And Fast Light

Abstract We propose a hybrid nanomechanical resonator (NR) system, where a NR coupled to an embedded quantum dot (QD) driven by two-tone fields is also coupled to another NR via the Coulomb interaction, and investigate the absorption spectra of the probe field under both the condition of resonance and off-resonance. The absorption spectra in resonance presents a means to determine the coupling strength of the two NRs. In the off-resonance, the absorption spectra can exhibit double Fano resonance, and the positions of the double Fano resonances are related to the interaction of the two NRs, the frequencies of the NRs, and the pump detuning. Furthermore, the double Fano resonances are accompanied by the rapid normal phase dispersion, which indicates the slow- and fast-light effect. We can obtain that the group velocity index is tunable by the interaction between the two NRs, the detuning, and the different resonator frequencies, which can reach the conversion from the fast light to slow light.

scholarly journals State Preparation and Tomography of a Nanomechanical Resonator with Fast Light Pulses

2019 ◽  
Vol 123 (11) ◽  
Author(s):  
Juha T. Muhonen ◽  
Giada R. La Gala ◽  
Rick Leijssen ◽  
Ewold Verhagen
Keyword(s):  
Nanomechanical Resonator ◽  
State Preparation ◽  
Light Pulses ◽  
Fast Light

Tunable phase control of slow and fast light propagation in a slab doped by four-level quantum dot nanostructure

2015 ◽  
Vol 29 (35n36) ◽  
pp. 1550231 ◽  
Author(s):  
Hossein Jafarzadeh ◽  
Elnaz Ahmadi Sangachin ◽  
Seyyed Hossein Asadpour
Keyword(s):  
Quantum Dot ◽  
Group Velocity ◽  
Light Propagation ◽  
Phase Variation ◽  
Phase Control ◽  
Dielectric Slab ◽  
Fast Light ◽  
Slow And Fast Light ◽  
Signal Field

Tunable phase control of the slow and fast light propagation through a defect slab medium doped by four-level InGaN/GaN quantum dot structure is demonstrated. By solving the Schrödinger and Poisson’s equations self-consistently, a spherical InGaN quantum dot with GaN barrier shell which can interact by terahertz (THz) signal field is designed numerically. It is found that the phase variation of THz signal field imparts the tunability in the group velocity of the transmitted and reflected pulses through a dielectric slab.

Slow light in quantum dot vertical cavity semiconductor optical amplifiers

2019 ◽  
Vol 34 (6) ◽  
pp. 064004
Author(s):  
G Mourkioti ◽  
P D Georgiou ◽  
T Kamalakis ◽  
D Alexandropoulos
Keyword(s):  
Quantum Dot ◽  
Slow Light ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Vertical Cavity
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