Sökning: "coupling junction"

Visar resultat 1 - 5 av 52 avhandlingar innehållade orden coupling junction.

1. 1. Analysis of slotted waveguide antennas

   Författare :Lars Manholm; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coupling junction; slot antenna; compound slot; mutual coupling; wraparound slot; waveguide slot; coupling slot; mutual admittance; edge slot; waveguide junction; moment method;

   Sammanfattning : .... LÄS MER

3. 2. Measuring quantum systems with a tunnel junction

   Författare :Joachim Wabnig; Jörgen Rammer; Ulrich Eckern; Umeå universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; quantum mechanics; quantum measurement; tunnel junction; qubit; nanomechanics; noise; Physics; Fysik;

   Sammanfattning : This thesis is concerned with employing the statistics of charge transfer in a conductor as a tool for quantum measurement. The physical systems studied are electronic devices made by nanoscale manufacturing techniques. In this context quantum measurement appears not as a postulate, but as physical process. LÄS MER

4. 3. Quantum effects in nanoscale Josephson junction circuits

   Författare :Silvia Corlevi; David B. Haviland; Jukka Pekola; KTH; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Josephson junctions; Josephson junction arrays; electromagnetic environment; Cooper pair transistor; parity effects; Physics; Fysik;

   Sammanfattning : This thesis presents the results of an experimental study on single-charge effects in nanoscale Josephson junctions and Cooper pair transistors (CPTs). In nanoscale Josephson junctions the charging energy EC becomes significant at sub-Kelvin temperatures and single-charge effects, such as the Coulomb blockade of Cooper pair tunneling, influence the transport properties. LÄS MER

5. 4. Nonlinear dynamics of Josephson Junction Chains and Superconducting Resonators

   Författare :Adem Ergül; David B. Haviland; Per Delsing; KTH; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Josephson Junction; SQUID; Superconducting Resonators;

   Sammanfattning : This thesis presents the results of the experimental studies on two kindof Superconducting circuits: one-dimensional Josephson junction chains andsuperconducting coplanar waveguide (CPW) resonators. One-dimensionalJosephson junction chains are constructed by connecting many Superconducting quantum interference devices (SQUIDs) in series. LÄS MER

7. 5. Antenna Integrated Superconducting Mixers

   Författare :Hans Ekström; Chalmers University of Technology; []
   Nyckelord :tapered slotline antenna; mixer; double dipole antenna; superconducting; hot electron; receiver; Niobium; bolometer; trilayer junction; edge junction; Niobium Nitride; SIS;

   Sammanfattning : This thesis investigates the prospects of some different superconducting mixers integrated with planar antennas for the millimeter and submillimeter regime. Two kinds of Superconductor/Insulator/Superconductor (SIS) tunnel junctions for use in mixers have been fabricated; Nb/PbBi edge junctions and Nb trilayer junctions. LÄS MER