scholarly journals Ultra-broad band, low power, highly efficient coherent wavelength conversion in quantum dot SOA

2012 ◽  
Vol 20 (25) ◽  
pp. 27902 ◽  
Author(s):  
G. Contestabile ◽  
Y. Yoshida ◽  
A. Maruta ◽  
K. Kitayama
Keyword(s):  
Quantum Dot ◽  
Low Power ◽  
Wavelength Conversion ◽  
Broad Band ◽  
Highly Efficient

Symmetric highly efficient (/spl sim/0 dB) wavelength conversion based on four-wave mixing in quantum dot optical amplifiers

2002 ◽  
Vol 14 (8) ◽  
pp. 1139-1141 ◽  
Author(s):  
T. Akiyama ◽  
H. Kuwatsuka ◽  
N. Hatori ◽  
Y. Nakata ◽  
H. Ebe ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Wavelength Conversion ◽  
Optical Amplifiers ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Highly Efficient

Highly efficient wavelength conversion in InAs/GaAs quantum dot lasers

2015 ◽  
Author(s):  
H. Huang ◽  
K. Schires ◽  
R. Raghunathan ◽  
D. Erasme ◽  
D. Arsenijevic ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Wavelength Conversion ◽  
Quantum Dot Lasers ◽  
Highly Efficient ◽  
Gaas Quantum Dot

scholarly journals Guanidinium‐Assisted Surface Matrix Engineering for Highly Efficient Perovskite Quantum Dot Photovoltaics

2020 ◽  
Vol 32 (26) ◽  
pp. 2001906 ◽  
Author(s):  
Xufeng Ling ◽  
Jianyu Yuan ◽  
Xuliang Zhang ◽  
Yuli Qian ◽  
Shaik M. Zakeeruddin ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Highly Efficient

KONDO EFFECT AND SPIN-CHARGE SEPARATION IN QUANTUM DOTS

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1426-1442
Author(s):  
L. I. GLAZMAN ◽  
F. W. J. HEKKING ◽  
A. I. LARKIN
Keyword(s):  
Quantum Dot ◽  
Charge Separation ◽  
Coulomb Blockade ◽  
Kondo Effect ◽  
Broad Band ◽  
Single Mode ◽  
Kondo Temperature ◽  
Average Charge ◽  
Opposite Case ◽  
Anderson Impurity Model

The Kondo effect in a quantum dot is discussed. In the standard Coulomb blockade setting, tunneling between the dot and the leads is weak, the number of electrons in the dot is well-defined and discrete; the Kondo effect may be considered in the framework of the conventional one-level Anderson impurity model. It turns out however, that the Kondo temperature TK in the case of weak tunneling is extremely low. In the opposite case of almost reflectionless single-mode junctions connecting the dot to the leads, the average charge of the dot is not discrete. Surprisingly, its spin may remain quantized: s=1/2 or s=0, depending (periodically) on the gate voltage. Such a "spin-charge separation" occurs because, unlike an Anderson impurity, a quantum dot carries a broad-band, dense spectrum of discrete levels. In the doublet state, the Kondo effect develops with a significantly enhanced TK. Like in the weak-tunneling regime, the enhanced TK exhibits strong mesoscopic fluctuations. The statistics of the fluctuations is universal, and related to the Porter-Thomas statistics of the wave function fluctuations.

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