Sökning: "quantum information processing"

Visar resultat 1 - 5 av 60 avhandlingar innehållade orden quantum information processing.

1. 1. Quantum Optics and Quantum Information Processing in Rare-Earth-Ion-Doped Crystals

   Författare :Nicklas Ohlsson; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rare-earth ions; Optical processing; Optical storage; Electromagnetism; akustik; optik; Elektromagnetism; optics; acoustics; Photon echo; Quantum optics; Quantum computing; Fysicumarkivet A:2003:Ohlsson;

   Sammanfattning : In this thesis, aspects of the use of cryogenically cooled rare-earth-ion-doped crystals in the fields of quantum optics and quantum information processing are addressed. The experiments and theoretical considerations referred to in this thesis are based on the coherent transient interaction between light and the ions in the crystals. LÄS MER

3. 2. Coherent Interactions in Rare-Earth-Ion-Doped Crystals for Applications in Quantum Information Science

   Författare :Mattias Nilsson; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum optics; relaxation; magnetic resonance; supraconductors; magnetic and optical properties; electrical; Condensed matter:electronic structure; Atom- och molekylärfysik; optical information processing; coherence in solids; Atomic and molecular physics; rare-earth-ion-doped crystals; magnetisk resonans; spektroskopi; supraledare; magnetiska och optiska ; egenskaper elektriska; Kondenserade materiens egenskaper:elektronstruktur; spectroscopy; quantum information;

   Sammanfattning : This thesis describes investigations of the use of cryogenically cooled rare-earth-ion-doped crystals for quantum information processing and quantum optics. Several aspects of the coherent interaction between light and rare-earth ions in solids are addressed. Quantum information science has given physicists new views of quantum mechanics. LÄS MER

4. 3. Quantum information processing with tunable and low-loss superconducting circuits

   Författare :Andreas Bengtsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; parametric modulation; quantum information; high coherence; superconducting circuits; circuit quantum electrodynamics;

   Sammanfattning : The perhaps most promising platform for quantum information processing is the circuit-QED architecture based on superconducting circuits representing quantum bits. These circuits must be made with low losses so that the quantum information is retained for as long as possible. LÄS MER

5. 4. All-Fiber System for Photonic States Carrying Orbital Angular Momentum : A Platform for Classical and Quantum Information Processing

   Författare :Alvaro Alarcón; Guilherme B. Xavier; Sebastião de Pádua; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Quantum Communication; Optical communication; Orbital Angular Momentum; Photonic Lantern; Few-mode-fibers;

   Sammanfattning : The protection of confidential data is a fundamental need in the society in which we live. This task becomes more relevant when observing that every day, data traffic increases exponentially, as well as the number of attacks on the telecommunication infra-structure. LÄS MER

7. 5. Single Photon Sources and Single Quantum System enabled Communication

   Författare :Muhammad Alley Hameedi; Mohamed Bourennane; Nicolas Brunner; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum information; quantum optics; quantum communication; single photon sources; fysik; Physics;

   Sammanfattning : Quantum information is a highly interesting and fast emerging field that involves processing information encoded into quantum systems and their subsequent use in various information tasks. The use of quantum resources such as superposition and entanglement have shown to enhance information processing capabilities beyond classical means in a number of communication, information and computation tasks. LÄS MER