Polarization selective magneto-optical study on the coupled quantum dots using resonant excitation

2004 ◽  
Vol 21 (2-4) ◽  
pp. 376-380 ◽  
Author(s):  
S Lee ◽  
D.Y Shin ◽  
H.S Lee ◽  
J.Y Lee ◽  
M Dobrowolska ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Resonant Excitation ◽  
Optical Study ◽  
Coupled Quantum Dots

Temporal response of the optically generated electric field in InAs/GaAs coupled quantum dots

2009 ◽  
Vol 1208 ◽  
Author(s):  
Kushal C. Wijesundara ◽  
Mauricio Garrido ◽  
Swati Ramanathan ◽  
Eric A. Stinaff ◽  
Allan S. Bracker ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Temporal Resolution ◽  
Resonant Excitation ◽  
Wetting Layer ◽  
Temporal Response ◽  
Coupled Quantum Dots ◽  
Optical Generation ◽  
Modulation Techniques ◽  
Field Modulation

AbstractCoupled quantum dots (CQDs) can provide a sensitive probe of the electric field within a device. With non-resonant excitation above the wetting layer (WL) energy, optical generation of an electric field within the CQD structure was observed. By alternating this non-resonant excitation the temporal response of the optically generated electric field was measured. Decay of this field was measured to be on the order of 110-140 μsec whereas the onset of the optically generated electric field was observed to be less than the temporal resolution of our experiment (7.5 μsec). This may provide a means for fast, non-contact, electric field modulation techniques.

scholarly journals Spatial mapping and manipulation of two tunnel-coupled quantum dots

2011 ◽  
Vol 83 (23) ◽  
Author(s):  
Magdalena Huefner ◽  
Bruno Kueng ◽  
Stephan Schnez ◽  
Klaus Ensslin ◽  
Thomas Ihn ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spatial Mapping ◽  
Coupled Quantum Dots

Observation of exciton molecule consisting of two different excitons in coupled quantum dots

2005 ◽  
Vol 87 (25) ◽  
pp. 253110 ◽  
Author(s):  
Keishiro Goshima ◽  
Shohgo Yamauchi ◽  
Kazuhiro Komori ◽  
Isao Morohashi ◽  
Takeyoshi Sugaya
Keyword(s):  
Quantum Dots ◽  
Coupled Quantum Dots

Hydrostatic pressure effects on the impurity states in InAs/GaAs coupled quantum dots

2008 ◽  
Vol 255 (5) ◽  
pp. 2312-2315 ◽  
Author(s):  
Congxin Xia ◽  
Yaming Liu ◽  
Shuyi Wei
Keyword(s):  
Quantum Dots ◽  
Hydrostatic Pressure ◽  
Pressure Effects ◽  
Coupled Quantum Dots ◽  
Impurity States

Ballistic transport and scarring effects in coupled quantum dots

1999 ◽  
Vol 59 (11) ◽  
pp. 7529-7536 ◽  
Author(s):  
R. Akis ◽  
D. K. Ferry
Keyword(s):  
Quantum Dots ◽  
Ballistic Transport ◽  
Coupled Quantum Dots ◽  
Scarring Effects

scholarly journals Phase coherent transport in two coupled quantum dots

2003 ◽  
Vol 16 (1) ◽  
pp. 76-82 ◽  
Author(s):  
R.H Blick ◽  
A.K Hüttel ◽  
A.W Holleitner ◽  
E.M Höhberger ◽  
H Qin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Coupled Quantum Dots ◽  
Coherent Transport

Measuring interactions between tunnel-coupled quantum dots in the quantum Hall regime

1999 ◽  
Vol 86 (7) ◽  
pp. 4043-4045 ◽  
Author(s):  
C. Livermore ◽  
D. S. Duncan ◽  
R. M. Westervelt ◽  
K. D. Maranowski ◽  
A. C. Gossard
Keyword(s):  
Quantum Dots ◽  
Quantum Hall ◽  
Coupled Quantum Dots ◽  
Quantum Hall Regime ◽  
Hall Regime

ANTI-RESONANCES OF TUNNELING THROUGH A QUANTUM WIRE WITH SIDE-COUPLED QUANTUM DOTS

2001 ◽  
Vol 15 (31) ◽  
pp. 4111-4121 ◽  
Author(s):  
JIN-FU FENG ◽  
SHI-JIE XIONG
Keyword(s):  
Quantum Dots ◽  
Single Particle ◽  
Low Temperatures ◽  
Quantum Wire ◽  
Coulomb Blockade ◽  
Destructive Interference ◽  
Channel Network ◽  
Coupled Quantum Dots ◽  
Coulomb Blockade Regime ◽  
Simple Summation

We study the transport properties of electrons in a quantum wire with side-coupled quantum dots in Coulomb blockade regime by the use of the equivalent single-particle multi-channel network and Landauer formula. At low temperatures the calculated dependence of the conductance on the gate voltage of dots exhibits two dips, indicating the destructive interference of the wave directly transmitted through the wire and the wave reflected from the dots. In a wire with more than one side-coupled dots the suppression of conductance is a simple summation of the effects of scattering of all the dots. The possibility of fabricating tunable switch devices by using such structures is discussed.

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