Sökning: "Quantum coherence"

Visar resultat 31 - 35 av 64 avhandlingar innehållade orden Quantum coherence.

  1. 31. Superinductance and fluctuating two-level systems: Loss and noise in disordered and non-disordered superconducting quantum devices

    Författare :David Niepce; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Disordered Superconductors; Nanowire; Superinductor; Quantum information; Superconducting circuits; Superinductance; TLS; Two-level Systems;

    Sammanfattning : In this thesis, we first demonstrate that a disordered superconductor with high kinetic inductance can realise a microwave low-loss, non-dissipative circuit element with impedance greater than the quantum resistance. This element, known as a superinductor, can suppress the fluctuations of charge in a quantum circuit. LÄS MER

  3. 32. Death and the Self : A Metaphysical Investigation of the Rationality of Afterlife Beliefs in the Contemporary Intellectual Climate

    Författare :Johan Eddebo; Mikael Stenmark; Karin Johanneson; Charles Taliaferro; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; death; subjectivity; selfhood; afterlife; irreducibility; critique of naturalism; immaterialist ontologies; dualism; idealism; philosophy of religion; quantum theory; interpretations of quantum mechanics; modernity; Philosophy of Religion; Religionsfilosofi;

    Sammanfattning : This dissertation's purpose is to test the hypothesis that beliefs in the possibility of post-mortem survival can be rationally held within the context of the contemporary scientific and philosophical environment. In terms of criteria of rationality, a basic evidentialism is assumed, such that propositions which are sufficiently supported by the available evidence can be rationally held. LÄS MER

  4. 33. Confinement Sensitivity in Quantum Dot Spin Relaxation

    Författare :Carl Wesslén; Eva Lindroth; Andrei Manolescu; Stockholms universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Sammanfattning : Quantum dots, also known as artificial atoms, are created by tightly confining electrons, and thereby quantizing their energies. They are important components in the emerging fields of nanotechnology where their potential uses vary from dyes to quantum computing qubits. Interesting properties to investigate are e.g. LÄS MER

  5. 34. Effects of Coherence and Correlations on Transport through Nanostructures

    Författare :Olov Karlström; Matematisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2012:Karlström;

    Sammanfattning : This dissertation deals with the effects of coherence and correlations on transport through nanostructures. Simulations are mainly performed using the second order von Neumann approach, a method capable of dealing with these effects in the presence of higher order tunneling. LÄS MER

  7. 35. Time Correlated Single Photon Spectroscopy on Pyramidal Quantum Dots

    Författare :Tomas Jemsson; Fredrik Karlsson; Per-Olof Holtz; Sytjugov Ilya; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Generation of non-classical light is both of fundamental interest and a common condition for quantum information applications (QIA). One feasible type of single photon emitter for QIA is based on semiconductor quantum dots (QDs), due to their atomic-like energy structure and their possibility to be integrated with other semiconductor devices on the same chip. LÄS MER