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Visar resultat 11 - 15 av 19 uppsatser som matchar ovanstående sökkriterier.

  1. 11. A Fabry–Pérot Cavity for Rare-Earth-Ion-Doped Nanocrystals

    Kandidat-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Andre Nüsslein; [2019]
    Nyckelord :Quantum Computer; Rear Earth Ions; Cavity; Laser; Cavity Quantum Electrodynamics; QED; Solidworks; Physics and Astronomy;

    Sammanfattning : This thesis work contributes to the effort of detecting single rare earth ions doped into crystals, an operation crucial for the development of rare earth quantum computer hardware. Doping crystals with rare earth elements, their trivalent ions substitute some of the crystal’s original bonds. LÄS MER

  3. 12. Quantum K means Algorithm

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Sumsam Ullah Khan; [2019]
    Nyckelord :;

    Sammanfattning : Quantum algorithms are being extensively researched nowadays seeing thepotential of providing exponential speed up when compared to classical algorithmexecution. This speed-up can play a big role in machine learning wheretraining a model is usually very slow. LÄS MER

  4. 13. "Fat" Nanobeam-Waveguide Resonator for Suppressing Spectral Diffusion in InGaAs Quantum Dots

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Qinda Guo; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : The coherent coupling of photons to solid state emitters is one of the building blocks for future quantum technology. However, one of the main sources for non-perfect or even strongly reduced coherence of the photons is charge noise which introduces energy shifts during or in between the photon emission events. LÄS MER

  5. 14. Sensitivity of Various Qubit Detection Methods in Pr:Y2SiO5

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

    Författare :Vassily Kornienko; [2017]
    Nyckelord :Rare-earth ion quantum computing; Pr:Y2SiO5; Physics and Astronomy;

    Sammanfattning : The long coherence times of the 4f hyperfine levels of rare-earth-ions gives the possibility to use these as quantum computation devices. Moreover after being doped into a crystal the strong dipole-dipole interaction can be utilized to entangle them. Much work has been done here in Lund to attain as many of the DiVincenzo criteria as possible. LÄS MER

  7. 15. Cooper-Pair Decoherence in SNS Hybrid Structure

    Magister-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Sareh Shafiei; [2014]
    Nyckelord :;

    Sammanfattning : The Laws of quantum mechanics control the behavior of electrons in nanoscale devices and nanostructures. Quantum coherence of electrons can appear in different experiments. In this work we used SNS (Superconductor-Normal-Superconductor) structures in order to experimentally and theoretically study and investigate the effect of quantum decoherence. LÄS MER