Browsing Conferinţe by Subject "quantum dots"

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  • Dynamics of quantum dots lasers under the influence of double cavity external optical feedback 
    SANDUŢA, Ana; RUSU, Spiridon; TRONCIU, Vasile (Tehnica UTM, 2015)
    This paper reports the numerical results on the investigation of the dynamical behavior of a semiconductor laser with quantum dots active medium and a feedback from double cavity. Due to the influence of the external ...
  • Entanglement Among Photon and Phonon Degrees of Freedom 
    CÂRLIG, S. (Tehnica UTM, 2015)
    We have investigated the quantum dynamics of a laser pumped quantum dot placed on a semiconductor beam suspended in an optical cavity. We demonstrate that optical and vibrational modes are correlated and we attest the ...
  • Formation and Decay of Excitons and Biexitons Excited in CdSe/CdS/CdZnS Colloidal Quantum Dots 
    BELOUSSOV, I. V.; PAVLENKO, V. I.; DOBYNDE, I. I.; OZOL, D. I. (Technical University of Moldova, 2021)
    The kinetics of a strongly nonequilibrium state of electrons and holes excited in quantum dots by a long laser pulse in the p-states are studied using the timeresolved photoluminescence. Three bands of the transient ...
  • The Influence of External Cavity Optical Feedback on the Dynamics of Quantum Dots Lasers 
    SANDUTA, A.; RUSU, S. S.; TRONCIU, V. Z. (Tehnica UTM, 2015)
    This paper reports the numerical results on the investigation of the dynamical behavior of a semiconductor laser with quantum dots active medium and a feedback from double cavity. Due to the influence of the external ...
  • Investigation of the Generalized Anderson Impurity Model 
    MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D. (Tehnica UTM, 2015)
    The new canonical transformation was proposed for generalized Anderson impurity model and proved appearance of ordinary Anderson impurity model with the external magnetic field. The Dyson type equations for one-particle ...
  • Large polarons in semiconductor nanostructures 
    DEVREESE, J. T. (Technical University of Moldova, 2005)
    I present an overview is presented of the fundamentals of large-polaron physics, which provide the basis of the analysis of polaron effects in semiconductor nanostructures. The emphasis is on the polaron optical absorption. ...
  • The quantum dynamics of a nanomechanical resonator coupled to two quantum dots 
    CEBAN, Victor; MACOVEI, Mihai (Technical University of Moldova, 2017)
    We investigate the quantum dynamics of a system composed of two initially excited closely-spaced quantum dots fixed on a quantum mechanical resonator. The system is submitted to environmental effects and obeys the conditions ...
  • Synthesis and Characterization of Colloidal PbS Quantum Dots in Gelatin 
    MITIOGLU, Anatolie; GHERMAN, Cornel; LASCOVA, Renata; CUHARUC, Anatolii; AVRILUŢA, Anatolie; CULIUC, Leonid (Technical University of Moldova, 2011)
    Colloidal solutions of lead sulphide (PbS) quantum dots (QDs) stabilized in gelatine were obtained using a novel simple method. Nanoparticle sizes were tuned during the synthesis by means of reaction temperature. In addition, ...
  • Synthesis of Colloidal InP Nanocrystal Quantum Dots 
    SIRBU, L.; GUTUL, T.; TODOSICIUC, A.; DANILA, M.; MULLER, R.; SARUA, A.; WEBSTER, R.; TIGINYANU, I. M.; URSAKI, V. (Technical University of Moldova, 2013)
    InP nanodots with the diameter of 4−10 nm were synthesized using sol-gel method. The nanodot dimensions were obtained using TEM, and we found the d(111) spacing to be 0.328nm which agrees within 3% of the literature value. ...

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