Sökning: "quantum channels"

Visar resultat 1 - 5 av 51 avhandlingar innehållade orden quantum channels.

  1. 1. Open Quantum Systems Effects in Interferometry, Quantum Computation, and Adiabatic Evolution

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Johan Åberg; Uppsala universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Open Systems; Completely Positive Maps; Channels; Decoherence; Quantum Information; Quantum Computing; Adiabatic Approximation; Quantum Search; Time-Complexity; Fysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : The effects of open system evolution on single particle interferometry, quantum computation, and the adiabatic approximation are investigated.Single particle interferometry: Three concepts concerning completely positive maps (CPMs) and trace preserving CPMs (channels), named subspace preserving (SP) CPMs, subspace local channels, and gluing of CPMs, are introduced. LÄS MER

  2. 2. Strong Interaction Between a Single Artificial Atom and Propagating Microwave Photons

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Io Chun Hoi; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microwave devices; Mollow triplet.; qubit; circuit QED; electromagnetically induced transparency; quantum nodes; transmon; quantum channels; superconductivity; anomalous dispersion; quantum information; microwaves; quantum network;

    Sammanfattning : The realization of a quantum network composed of quantum nodes which process quantum fields and quantum channels to transfer quantum information has recently been proposed. In recent years, fundamental experiments produced by superconducting circuits suggest that they are promising candidates for realization of a quantum network. LÄS MER

  3. 3. Quantum error correction

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Jonas Almlöf; KTH.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : Quantum error correction is the art of protecting quantum states from the detrimental influence from the environment. To master this art, one must understand how the system interacts with the environment and gives rise to a full set of quantum phenomena, many of which have no correspondence in classical information theory. LÄS MER

  4. 4. Electron Transport in Low Dimensional Systems

    Detta är en avhandling från Peter Ramvall, Vattenverksvägen 17D, 21221 Malmö

    Författare :Peter Ramvall; Lunds universitet.; Lund University.; [1996]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; high mobility; low-dimensional structures; III-V semiconductors; quantum wells; heterojunctions; quantum Hall effect; edge channels; Shubnikov-de Haas effect; alloy-disorder scattering; Y-branch switch; two dimensional electron gas; Fysik; Fysicumarkivet A:1996:Ramvall; Physics; spin splitting; mag;

    Sammanfattning : Popular Abstract in Swedish Avhandlingen består av transportmätningar på AlGaAs/GaAs och GaInAs/InP heterostrukturer.... LÄS MER

  5. 5. Complexity and Error Analysis of Numerical Methods for Wireless Channels, SDE, Random Variables and Quantum Mechanics

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Håkon Hoel; KTH.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Wireless Channels; SDE; Monte Carlo Methods; Molecular Dynamics; Quantum Mechanics;

    Sammanfattning : This thesis consists of the four papers which consider different aspects of stochastic process modeling, error analysis, and minimization of computational cost.     In Paper I, we construct a Multipath Fading Channel (MFC) model for wireless channels with noise introduced through scatterers flipping on and off. LÄS MER