scholarly journals Effect of spontaneously generated coherence on transient evolution of LWI gain in an open Ladder type system

2009 ◽  
Vol 58 (5) ◽  
pp. 3161
Author(s):  
Yang Yan-Ling ◽  
Wang Lei ◽  
Liu Zhong-Bo ◽  
Lu Hong-Wu ◽  
Fan Xi-Jun
Keyword(s):  
Type System ◽  
Spontaneously Generated Coherence

Enhancement of lasing without inversion induced by spontaneously generated coherence in an open ladder-type system

2006 ◽  
Vol 2 (6) ◽  
pp. 474-476
Author(s):  
Ai-yun Li ◽  
Xi-jun Fan ◽  
Fan-ge Bu ◽  
Hong-xia Qiao ◽  
Zhi-zhan Xu
Keyword(s):  
Type System ◽  
Spontaneously Generated Coherence ◽  
Lasing Without Inversion

Phase control of probe response in an open ladder type system with spontaneously generated coherence

2007 ◽  
Vol 280 (2) ◽  
pp. 397-403 ◽  
Author(s):  
Aiyun Li ◽  
Hui Ma ◽  
Xia Tan ◽  
Yanling Yang ◽  
Dianmin Tong ◽  
...  
Keyword(s):  
Type System ◽  
Phase Control ◽  
Spontaneously Generated Coherence ◽  
Probe Response

Spontaneously generated coherence in ladder-plus-Y double quantum dot system

2019 ◽  
Vol 233 (2-4) ◽  
pp. 65-71
Author(s):  
Baqer Al-Nashy ◽  
Sabeah Jasim ◽  
Ali Gehad Al-Shatravi ◽  
Amin H Al-Khursan
Keyword(s):  
Quantum Dot ◽  
Density Matrix ◽  
Slow Light ◽  
Matrix Theory ◽  
Type System ◽  
Double Quantum ◽  
Wetting Layer ◽  
Spontaneously Generated Coherence ◽  
Double Quantum Dot ◽  
Density Matrix Theory

A model was presented for linear susceptibility in ladder-plus-Y configuration of double quantum dot system using density matrix theory and including spontaneously generated coherence of Λ-type system. Wetting layer and quantum dot inhomogeneity were considered in the calculations, which gives a practical description of double quantum dot structures well. With increasing spontaneously generated coherence from Λ-component, the dispersion was increased and shifted under spontaneously generated coherence. The inclusion of wetting layer under spontaneously generated coherence increases gain which coincides with the published results. A possibility of slow light was predicted.

CROSSOVER FROM SPONTANEOUSLY GENERATED COHERENCE TO AUTLER–TOWNES SPLITTING IN THREE-LEVEL ATOMIC SYSTEMS

2013 ◽  
Vol 27 (14) ◽  
pp. 1350065
Author(s):  
QIONG DU ◽  
CHAO HANG ◽  
GUOXIANG HUANG
Keyword(s):  
Absorption Spectrum ◽  
Laser Field ◽  
Type System ◽  
Type Systems ◽  
Probe Laser ◽  
Residue Theorem ◽  
Probe Field ◽  
Atomic Systems ◽  
Spontaneously Generated Coherence ◽  
Spectrum Decomposition

We investigate spontaneously generated coherence (SGC) and Autler–Townes Splitting (ATS) in various three-level systems. Through detailed analytical calculations on absorption spectrum of probe laser field, we show that in V-type system the SGC can completely eliminate the absorption of the probe field and at the same time significantly reduce the group velocity. By using residue theorem and spectrum decomposition method, we prove that there exists a crossover from SGC to ATS for both cold and warm atoms when the magnitude of SGC is changed. Different contributions of SGC and ATS to probe-field absorption spectrum are clearly clarified in different parameter regions. In addition, our results show that there is no SGC and hence no SGC-ATS crossover in Λ- and Ξ-type systems.

Giant Kerr nonlinearity in an open V-type system with spontaneously generated coherence

Optik ◽  
2013 ◽  
Vol 124 (7) ◽  
pp. 613-616 ◽  
Author(s):  
Yanfeng Bai ◽  
Taigang Liu ◽  
Xiaoqiang Yu
Keyword(s):  
Type System ◽  
Kerr Nonlinearity ◽  
Spontaneously Generated Coherence

The influence of spontaneously generated coherence on atom-photon entanglement in a Λ-type system with an incoherent pump

Open Physics ◽  
2014 ◽  
Vol 12 (12) ◽  
Author(s):  
Xin Yang ◽  
Dong Yan ◽  
Qianqian Bao ◽  
Yan Zhang ◽  
Cuili Cui
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Critical Role ◽  
Type System ◽  
Entangled State ◽  
Time Dynamic ◽  
Spontaneously Generated Coherence ◽  
Coupling Laser ◽  
Short Time ◽  
Induced Transparency ◽  
Incoherent Pump

AbstractOwing to interference induced by spontaneous emission, the density-matrix equations in a three-level Λ-type system have an additional coherence term, which plays a critical role in modulating the inversionless gain and electromagnetically induced transparency effect. In addition, it is shown that spontaneously generated coherence (SGC) has an effect on the entanglement between an atom and a photon of the coupling laser field by calculating the degree of entanglement (DEM) of the atomic system. In this paper, we investigate the influence of the SGC effect on atom-photon entanglement in a Λ-type system, which generally remains a high entangled state. When an incoherent pump source is introduced, we find that the SGC effect could exert considerable influence on the atom reduced entropy under certain conditions for both transient and steady states. More interestingly, such an incoherent pump field could actively affect the short-time dynamic behaviors of the transient quantum entangled state at a certain range of pump rate as a typical coherent case.

Phase control in an open Λ-type system with spontaneously generated coherence

2007 ◽  
Vol 16 (3) ◽  
pp. 718-724 ◽  
Author(s):  
Cui Ni ◽  
Fan Xi-Jun ◽  
Li Ai-Yun ◽  
Liu Cheng-Pu ◽  
Gong Shang-Qing ◽  
...  
Keyword(s):  
Type System ◽  
Phase Control ◽  
Spontaneously Generated Coherence

Phase control of Kerr nonlinearity in V-type system with spontaneously generated coherence

2015 ◽  
Vol 63 (6) ◽  
pp. 598-604 ◽  
Author(s):  
Hailong Gao ◽  
Hui Sun ◽  
Shuangli Fan ◽  
Hongjun Zhang
Keyword(s):  
Type System ◽  
Kerr Nonlinearity ◽  
Phase Control ◽  
Spontaneously Generated Coherence
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