Sökning: "spdc"

Hittade 5 uppsatser innehållade ordet spdc.

  1. 1. Generation and detection of entangled single-photon pairs

    Kandidat-uppsats, Uppsala universitet/FREIA

    Författare :Gabriella Tesfamichael Habtezion; [2024]
    Nyckelord :;

    Sammanfattning : Quantum information technology is an emerging field with important applications such as quantum cryptography and teleportation, quantum imaging and lithography. These applications make use of single photons and pairs of entangled photons. In this work, we experimentally generate and attempt to detect the entangled photons. LÄS MER

  3. 2. III-V semiconductor waveguides for application in nonlinear optics.

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Andreas Charalampous; [2022]
    Nyckelord :InGaP; optical waveguides; integrated optics; quantum nonlinear optics; SHG; SPDC; InGaP; optiska vågledare; integrerad optik; icke-linjär kvantoptik; SHG; SPDC;

    Sammanfattning : This thesis presents studies on III-V semiconductor waveguides with particular emphasis on second-order optical nonlinearity. The nonlinear processes that were investigated in this thesis are the Second Harmonic Generation (SHG) and the Spontaneous Parametric Down-Conversion (SPDC). LÄS MER

  4. 3. 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. 4. Generating quantum entangled photons

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Stephan Nieto; Daniel Sanaee; [2021]
    Nyckelord :;

    Sammanfattning : In this project a laser setup was constructed, quantum entangled photons were generated and two different methods were used to show said entanglement. The entangled photons were generated through a process called spontaneous parametric down conversion (SPDC). LÄS MER

  7. 5. Generation of the Bound Entangled Smolin State and Entanglement Witnesses for Low-Dimensional Unitary Invariant States

    Uppsats för yrkesexamina på avancerad nivå, Teoretisk fysik

    Författare :Emil Nordling; [2010]
    Nyckelord :quantum mechanics; quantum information science; entanglement; photonics; Smolin state; unitary invariant states;

    Sammanfattning : Quantum entanglement is employed as a resource throughout quantum information science. However, before entanglement can be put to intelligent use, the issues of its production and detection must be considered. This thesis proposes four schemes for producing the bound entangled Smolin state. LÄS MER