Sökning: "Quantum Speed Limits"

Hittade 4 uppsatser innehållade orden Quantum Speed Limits.

  1. 1. Generalizations of the Mandelstam-Tamm Quantum Speed Limit

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Niklas Hörnedal; [2021]
    Nyckelord :Quantum Information; Quantum Speed Limits; Unitary Dynamics; Time-Optimization; Mandelstam-Tamm;

    Sammanfattning : Quantum speed limits are lower bounds on the evolution time for quantum systems. In this thesis, we consider closed quantum systems. We investigate how different principal bundles offers a geometrical method for obtaining generalizations of the Mandelstam-Tamm quantum speed limit for mixed states. LÄS MER

  3. 2. Investigation of Resistive Random Access Memory for 1T1R Nanowire Array Integration

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Orestes Theodoridis; [2020]
    Nyckelord :RRAM; Nanowire; Memory Technology; Nanoelectronics; Nanoscience; Physics and Astronomy;

    Sammanfattning : As modern electronics have started to reach its physical scaling limits, novel architectures and physics is needed to meet future demands. Oxide-based Resistive Random Access Memory (RRAM) is a new emerging technology that uses filament formation and rupture in thin oxides to generate resistive switching. LÄS MER

  4. 3. Investigating Optical-Field-Induced Currents in GaN using Ultrafast Lasers

    Magister-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Vidar Flodgren; [2019]
    Nyckelord :GaN; gallium nitride; nanoscience; material science; ultrafast lasers; Yb Laser; Pharos Laser; titanium sapphire laser; device fabrication; lift-off; gold etching; optical-field-induced currents; modelling; matlab; Physics and Astronomy;

    Sammanfattning : This study saw the development of an experimental setup capable of generating and measuring optical-field-induced currents in a variety of nanodevices fabricated specifically for this project. Each device design features two metallic contacts, closely separated by about 5 micrometers, deposited onto a semiconductor or insulator substrate. LÄS MER

  5. 4. Quantum Speed Limits of Spin Chain Dynamics : Applying Quantum Speed Limits to Spin Chains used as Quantum Channels

    L3-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Yonatan Gazit; [2017]
    Nyckelord :;

    Sammanfattning : Quantum computers, like classical ones, need to be capable of sending informa-tion between different parts of the computer. Spin chains are one viable method of sending qubits while preserving the superposition and entanglement of a state. LÄS MER