scholarly journals Magnetopolaron-state lifetime and qubit decoherence in donor-center quantum dots with the electromagnetic field

2020 ◽  
Vol 69 (14) ◽  
pp. 147802
Author(s):  
Xu-Fang Bai ◽  
Lei Chen
Keyword(s):  
Quantum Dots ◽  
Electromagnetic Field ◽  
Donor Center

Microwave-assisted synthesis of CdSe quantum dots: can the electromagnetic field influence the formation and quality of the resulting nanocrystals?

Nanoscale ◽  
2012 ◽  
Vol 4 (23) ◽  
pp. 7435 ◽  
Author(s):  
Mojtaba Mirhosseini Moghaddam ◽  
Mostafa Baghbanzadeh ◽  
Andreas Keilbach ◽  
C. Oliver Kappe
Keyword(s):  
Quantum Dots ◽  
Electromagnetic Field ◽  
Microwave Assisted Synthesis ◽  
Cdse Quantum Dots ◽  
Microwave Assisted ◽  
Field Influence

scholarly journals Exact Evaluation of Statistical Moments in Superradiant Emission

2019 ◽  
Vol 24 (2) ◽  
pp. 66
Author(s):  
Gilberto M. Nakamura ◽  
Brenno Cabella ◽  
Alexandre S. Martinez
Keyword(s):  
Quantum Dots ◽  
Electromagnetic Field ◽  
Discrete Time ◽  
Arbitrary Number ◽  
Condensed Matter ◽  
Statistical Moments ◽  
Birthday Problem ◽  
Exact Evaluation ◽  
Bose Einstein ◽  
High Finesse

Superradiance describes the coherent collective radiation caused by the interaction between many emitters, mediated by a shared electromagnetic field. Recent experiments involving Bose–Einstein condensates coupled to high-finesse cavities and interacting quantum dots in condensed-matter have attracted attention to the superradiant regime as a fundamental step to create quantum technologies. Here, we consider a simplified description of superradiance that allows the evaluation of statistical moments. A correspondence with the classical birthday problem recovers the statistical moments for discrete time and an arbitrary number of emitters. In addition, the correspondence provides a way to calculate the degeneracy of the problem.

Influences of Electric Field and Temperature on Ground-state Lifetime of Bound Polaron in Donor-center Quantum Dots

2020 ◽  
Vol 41 (8) ◽  
pp. 991-998
Author(s):  
EERDUNCHAOLU ◽  
◽  
WUYUNQIMUGE ◽  
LIAN Yong-qiang ◽  
LI Hong-min ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Ground State ◽  
Donor Center ◽  
Bound Polaron

Effect of gravity and electromagnetic field on the spectra of cylindrical quantum dots together with AB flux field

2020 ◽  
Vol 35 (12) ◽  
pp. 2050092
Author(s):  
B. Tchana Mbadjoun ◽  
J. M. Ema’a Ema’a ◽  
P. Ele Abiama ◽  
G. H. Ben-Bolie ◽  
P. Owono Ateba
Keyword(s):  
Quantum Dots ◽  
Electromagnetic Field ◽  
Optical Absorption ◽  
Energy Levels ◽  
Spherical Shape ◽  
Wave Functions ◽  
Optical Absorption Coefficient ◽  
Electron Quantum ◽  
Uvarov Method ◽  
Aharonov Bohm

In this work, we study the spectral properties of electron quantum dots (QDs) confined in 2D parabolic harmonic oscillator influenced by gravity, external uniform electromagnetic field together with an Aharonov–Bohm (AB) flux field. Our calculations are based on the Nikiforov–Uvarov method and we obtain exact solutions for the energy levels and normalized wave functions. The interband optical absorption QDs of the parabolic spherical shape in GaAs is studied theoretically and the total optical absorption coefficient has been calculated by using the energy eigenvalues spectra and the corresponding wave functions.

Giant exciton-light coupling in large size semiconductor quantum dots

2002 ◽  
Vol 737 ◽  
Author(s):  
Bernard Gil ◽  
Alexey V. Kavokin
Keyword(s):  
Quantum Dots ◽  
Electromagnetic Field ◽  
Decay Time ◽  
Coupling Strength ◽  
Radiative Decay ◽  
Electronic States ◽  
Semiconductor Quantum Dots ◽  
Bulk Properties ◽  
Large Size ◽  
Light Coupling

ABSTRACTWe investigate the strength of the coupling of the electronic states with the electromagnetic field in semiconductor nanospheres, taking into account the retardation effect. We show that the coupling strength is particularly strong: the bulk properties are so enhanced that the radiative decay time can reach some 30 picoseconds for quantum dots sizes of some 30 nm.

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