Sökning: "superradiance"

Hittade 4 avhandlingar innehållade ordet superradiance.

1. 1. Triptych of quantum matter in one dimension : Playful constructions in theoretical and computational physics

   Författare :Axel Gagge; Jonas Larson; Andrew Daley; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bloch oscillations; Peierls; adiabatic; diabatic; ultracold atoms; Bose-Fermi mixtures; phonon; cQED; superradiance; polarons; DMRG; MPS; Kosterlitz-Thouless; Wannier; Bloch; quantum phase transitions; Theoretical Physics; teoretisk fysik;

   Sammanfattning : In this compilation thesis, three different quantum mechanical systems are presented. All three have in common that they are one-dimensional quantum systems which, each in their own way, can be seen as analogous to other quantum systems. LÄS MER

3. 2. Towards Efficient Quantum Memories in Rare-Earth-Ion-Doped Solids

   Författare :Atia Amari; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; rare-earth-ion-doped crystals; spectral hole-burning spectroscopy; AFC; CRIB; superradiance; slow light; Quantum memories; photon echo; EIT;

   Sammanfattning : This thesis describes experiments aimed at developing a key component in applications such as quantum networks and long-distance quantum communication systems: quantum memories. Quantum memories for light using photon-echo and coherent rephrasing techniques have been developed. The work is carried out on rare-earth-ion-doped inorganic crystals. LÄS MER

4. 3. Coherent Processes in Rare-Earth-Ion-Doped Solids

   Författare :Andreas Walther; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum memories; laser stabilization; quantum computation; rare-earth-ion-doped crystals; spectral hole-burning; superradiance; entanglement; spectroscopy; slow light;

   Sammanfattning : This thesis describes a number of coherent processes, such as quantum information processing, superradiance and electromagnetically induced transparency, which have been experimentally implemented using rare-earth-ion-doped crystals. The rare-earths are a class of elements that have in common, an atomic structure that allows for very long lifetimes as well as coherence times, both on optical transitions and on spin transitions. LÄS MER

5. 4. Quantum properties of light and matter in one dimension

   Författare :Axel Gagge; Jonas Larson; Jack Lidmar; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; teoretisk fysik; Theoretical Physics;

   Sammanfattning : This licentiate thesis concerns topics in non-interacting and interacting quantum physics in one dimension. We present the notions of Wannier functions and tight-binding models. Quantum walks are discussed, quantum mechanical analogues to random walks. LÄS MER