Sökning: "åke larsson"

Visar resultat 16 - 20 av 28 avhandlingar innehållade orden åke larsson.

1. 16. Weaknesses of Authentication in Quantum Cryptography and Strongly Universal Hash Functions

   Författare :Aysajan Abidin; Jan-Åke Larsson; Viiveke Fåk; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

   Sammanfattning : Authentication is an indispensable part of Quantum Cryptography, which is an unconditionally secure key distribution technique based on the laws of nature. Without proper authentication, Quantum Cryptography is vulnerable to “man-in-the-middle” attacks. LÄS MER

3. 17. A Few-Mode-Fiber Platform for Quantum Communication Applications

   Författare :Alvaro Alarcón Cuevas; Guilherme B. Xavier; Jan-Åke Larsson; Sebastião Pádua; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Society as we know it today would not have been possible without the explosive and astonishing development of telecommunications systems, and optical fibers have been one of the pillars of these technologies.Despite the enormous amount of data being transmitted over optical networks today, the trend is that the demand for higher bandwidths will also increase. LÄS MER

4. 18. Quantum error correction

   Författare :Jonas Almlöf; Gunnar Björk; Marcin Swillo; Jan-Åke Larsson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

   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

5. 19. Quantum error correction

   Författare :Jonas Almlöf; Gunnar Björk; Jan-Åke Larsson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum error correction; dissipative channel; decoherence; fidelity; mutual information;

   Sammanfattning : This thesis intends to familiarise the reader with quantum error correction, and also show some relations to the well known concept of information - and the lesser known quantum information. Quantum information describes how information can be carried by quantum states, and how interaction with other systems give rise to a full set of quantum phenomena, many of which have no correspondence in classical information theory. LÄS MER

7. 20. Fractures of the distal radius : Factors related to radiographic evaluation, conservative treatment and fracture healing

   Författare :Albert Christersson; Sune Larsson; Bengt Sandén; Karl-Åke Jansson; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Sammanfattning : Distal radius fractures (DRFs) are one of the most common injuries encountered in orthopaedic practise. Such fractures are most often treated conservatively, but surgical treatment has become increasingly common. LÄS MER