Sökning: "quantum entanglement"

Visar resultat 16 - 20 av 46 uppsatser innehållade orden quantum entanglement.

  1. 16. Sharing Quantum Resources Across a Metropolitan Network

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Martin Carlnäs; [2022]
    Nyckelord :QKD; Entanglement; SNSPD; Quantum Dot; Exciton; Biexciton; QKD; Kvantsammanflätning; SNSPD; Kvant Prick; Exciton; Biexciton;

    Sammanfattning : Kvantsammanflätning har varit ett populärt ämne bland fysiker i snart 100 år då det tydligt belyser hur annorlunda kvantmekanikens värld är jämfört med den klassiska verklighet vi lever i. Med tiden har kvantsammanflätning blivit mer och mer välförstått och teknologier ämnade att utnyttja det har de senaste årtionden kommit allt närmare till industriell använding. LÄS MER

  3. 17. Gossiping electrons : Strong decoherence from screening

    Kandidat-uppsats, Uppsala universitet/Materialteori

    Författare :Felix Langueville; [2022]
    Nyckelord :Quantum mechanics; Decoherence; Quantum decoherence; Screening; Decoherence from screening; quantum entanglement; entangled electrons; Kvantfysik; Dekoherens; Kvantmekanisk sammanflätning; skärmning; Dekoherens från skärmning;

    Sammanfattning : In a strongly correlated material the localized electrons, typically the electrons in the 3d-orbitals, become entangled with each other through the Coulomb interaction. However, these electrons also interact with more mobile (itinerant) electrons in the s- and p-orbitals. LÄS MER

  4. 18. Demonstrating quantum entanglement and Hong-Ou-Mandel effect, using type-II spontaneous parametric down conversion with C programming for data collection

    Kandidat-uppsats, KTH/Fysik

    Författare :Erik Svanberg; Johan Johannisson Lundquist; [2022]
    Nyckelord :Quantum entanglement; polarization; HOM; Hong-Ou-Mandel; indistinguishability; type-II SPDC; spontaneous parametric down conversion; non-linear crystal; beam splitter; indistinguishable photons; data collection in C;

    Sammanfattning : Spontaneous parametric down conversion (SPDC) is used to generate quantum entangled photons through a non-linear crystal. The entanglement of photons is demonstrated by observing the effects of indistinguishability on photons, first through time and energy, then by polarization. The Hong-Ou-Mandel (HOM) effect was also demonstrated. LÄS MER

  5. 19. Information Flow and Local Observables in Many Body Localized Systems

    Master-uppsats, KTH/Fysik

    Författare :Daniel Niemi; [2022]
    Nyckelord :Theoretical physics; many body localization; localization; aubry-andré; aubry-andrei; condensed matter; quantum matter; Teroretisk fysik; mångpartikellokalisering; lokalisering; aubry-andré; aubry-andrei; kondenserad materia; kvantmateria;

    Sammanfattning : Disordered quantum many-body systems exhibiting the many-body localization (MBL) phenomenon evade the fate of thermalization due to the existence of an extensively large set of quasi-local integrals of motion (l-bits). Due to the size of the Hilbert space of many-body systems, it is hard to compute the time evolution of many-body systems generally, which hinders our understanding of the MBL phenomenon. LÄS MER

  7. 20. Nonlinear mode coupling and parametric amplification with superconducting kinetic inductance

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Daniele Lopriore; [2022]
    Nyckelord :Quantum technology; microwave engineering; nanofabrication; parametric amplifiers; multimode entanglement; kinetic inductance; Kvantteknologi; mikrovågsteknik; nanotillverkning; parametriska förstärkare; multimodentrassling; kinetisk induktans;

    Sammanfattning : We investigate the resonant characteristics of superconducting meandering nanowires to design a nonlinear kinetic inductance traveling-wave parametric amplifier. The devices are patterned out of 15 nm thick NbTiN films. They consist of a coplanar waveguide, that shrinks into 100 nm wide meandering nanowires. LÄS MER