Sökning: "Coherence length"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden Coherence length.

  1. 1. Laboratory starlight simulator for future space-based heterodyne interferometry

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :William Karlsson; [2023]
    Nyckelord :Angular resolution; Astronomy; Coherence length; Digital delay lines; Fiber optical circuit; Heterodyne interferometry; Interference; Laboratory starlight simulator; NIR light Near-Infrared ; Optical path differences; Space exploration; Starlight; Testbed environment;

    Sammanfattning : In astronomy, interferometry by ground-based telescopes offers the greatest angular resolution. However, the Earth´s atmosphere distorts the incident wavefront from a celestial object, leading to blurring and signal loss. It also restricts the transmission of specific wavelengths within the electromagnetic spectrum. LÄS MER

  3. 2. 2 + 1 Dimensional Chern-Simons Theory for Landau-Ginzburg Theory

    Kandidat-uppsats,

    Författare :Adam Fredriksson; [2023]
    Nyckelord :2 1 dimensional Chern-Simons theory; superconductivity.;

    Sammanfattning : In this work, 2 + 1 dimensional Chern-Simons theory have been used in an attempt to describe superconductivity. It was examined if the two defining properties of superconductivity, infinite direct current (DC) conductivity and the Meissner effect, as well as the two characteristic length scales of superconductors, the London penetration depth and the coherence length, could be obtained. LÄS MER

  4. 3. Towards a Cooper pair splitter in InAs nanowires with crystal-phase defined quantum dots

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Lunds Tekniska Högskola

    Författare :Louise Olausson; [2022]
    Nyckelord :Cooper pair splitter; quantum dot; nanowire; superconductivity; InAs; crystal-phase; Physics and Astronomy;

    Sammanfattning : Cooper pair splitting (CPS) is a process in which the two spin-entangled electrons of a Cooper pair in a superconductor are split into two spatially separated electrons. If the separated electrons are still entangled, CPS can be studied to increase the knowledge of non-locality in quantum systems. LÄS MER

  5. 4. Niobium Ohmic Contacts for Cryogenic Indium Phosphide High-Electron-Mobility Transistors

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Linnéa Bendrot; [2022]
    Nyckelord :Ohmic contacts; high-electron-mobility transistor; InP; Nb films; cryogenic electronics; low-noise amplifier; quantum computing; transfer length method; superconductivity; contact barrier resistance; Ohmska kontakter; högelektronmobilitetstransistorer; indiumfosfid; niob; tunnfilm; kryogen elektronik; lågbrusförstärkare; kvantdatorer; Transfer Length-metod; supraledning; kontakt- barriärresistans;

    Sammanfattning : Ohmic contacts are crucial components in semiconductor devices such as transistors and diodes, and lowering their contact resistance is an important factor in device performance enhancement. This is especially important for low-noise amplifiers (LNAs) where device noise temperature decreases both directly and indirectly with decreasing contact resistance. LÄS MER

  7. 5. Tabletop Role-playing Games (TRPG) and Group Coherence

    Kandidat-uppsats, Södertörns högskola/Medieteknik

    Författare :Martin Danielsson; [2021]
    Nyckelord :tabletop role-playing game; pen-and-paper role-playing game; group coherence; game enjoyment; satisfaction; bordsrollspel; penna- och papper-rollspel; gruppkoherens; spelglädje; nöjdhet;

    Sammanfattning : Tabletop role-playing games (TRPGs), also known as Pen-and-Paper role-playing games(PnP-RPGs), are games that can be described as a mix between board games and improvisationaltheatre. Each player takes on the role of a single character, while the game’s leader(GM or DM) is in charge of both simulating the game world, acting out all remainingcharacters and facilitating the game rules. LÄS MER