Sökning: "Keldysh"

Hittade 2 uppsatser innehållade ordet Keldysh.

  1. 1. Physical modeling of optical modulators for optical link analysis : Optical link analysis in silicon photonics technologies

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

    Författare :Daniele Poggi; [2019]
    Nyckelord :Silicon photonics; physical modeling; ring modulator; electro-absorption modulator; optical modulator; optical link system; power consumption; Kiselfotonik; fysisk modellering; ringmodulator; elektroabsorptionsmodulator; optisk modulator; optiskt länksystem; strömförbrukning;

    Sammanfattning : According to the 2018 Ethernet Roadmap projections, the requirements for high speed links keep increasing every year, always keeping an eye on the energy per bit consumption of the communication system. The Ethernet requirements are estimated to reach 1Tbps by 2022-2025. LÄS MER

  3. 2. Supercurrents in a Topological Josephson Junction with a Magnetic Quantum Dot

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Adam Szewczyk; [2018]
    Nyckelord :Majorana; Andreev; Keldysh; Josephson; density of states; quantum transport; topological superconductor; magnet;

    Sammanfattning : The purpose of this master thesis is to investigate theoretically the influence of a nanomagnet on the Josephson effect displayed by phase biased point contacts consisting of topological superconductors. The device is modeled using the nonequilibrium Keldysh Green’s function technique. First, the Gor’kov Green’s functions are calculated. LÄS MER