Search for dissertations about: "quantum measurement"

Showing result 16 - 20 of 112 swedish dissertations containing the words quantum measurement.

  2. 16. Majorana Representation in Quantum Optics : SU(2) Interferometry and Uncertainty Relations

    Author : Saroosh Shabbir; Gunnar Björk; Maria Chekhova; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Majorana representation; Quantum optics; interferometry; SU 2 group; angular momentum; arbitrary optical gates; Fysik; Physics;

    Abstract : The algebra of SU(2) is ubiquitous in physics, applicable both to the atomic spin states and the polarisation states of light. The method developed by Majorana and Schwinger to represent pure, symmetric spin-states of arbitrary value as a product of spin-1/2 states is a powerful tool that allows for a great conceptual and practical simplification. READ MORE

  4. 17. Thermoelectric Phenomena in Quantum Dots

    Author : Sofia Fahlvik Svensson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2014:Fahlvik Svensson; Coulomb blockade; nanowire; thermoelectricity; quantum dot;

    Abstract : Thermoelectricity is being intensively researched as it is believed to hold great promise for applications in power generation and cooling. One way to quantify the electrical power output of a thermoelectric material is the power factor, a function of electrical conductivity and thermopower. READ MORE

  5. 18. Transport Studies of Local-Gate Defined Quantum Dots in Nanowires

    Author : Carina Fasth; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Semiconductory physics; Fysik; Physics; quantum devices; nanowire; quantum dot; Halvledarfysik;

    Abstract : This thesis focuses on electrical transport in semiconductor InAs nanowires grown by chemical beam epitaxy. Initially, transport length scales of homogeneous InAs n-type nanowires are characterized by low-temperature magnetoconductance measurements. The measurements show phase-coherent conductivity corrections. READ MORE

  6. 19. Electronic and Photonic Quantum Devices

    Author : Erik Forsberg; KTH; []
    Keywords : electron waveguide devices; nanoelectronics; ballistic transport; electroabsorption modulators; Rabi oscillations; quantum measurements;

    Abstract : In this thesis various subjects at the crossroads of quantummechanics and device physics are treated, spanning from afundamental study on quantum measurements to fabricationtechniques of controlling gates for nanoelectroniccomponents.Electron waveguide components, i.e. READ MORE

  7. 20. Bell tests and the no-signalling assumption

    Author : Massimiliano Smania; Mohamed Bourennane; Ingemar Bengtsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum; quantum optics; Bell tests; CHSH inequality; entanglement; fysik; Physics;

    Abstract : Bell's theorem was originally meant for testing fundamental properties of Nature, namely local realism. However, through the years it has become a powerful device for certifying encryption security, randomness, and entanglement among other properties. READ MORE