Sökning: "Quantum Measurement"

Visar resultat 21 - 25 av 112 avhandlingar innehållade orden Quantum Measurement.

  1. 21. Entanglement in quantum communication : preparation and characterization of photonic qubits

    Författare :Daniel Ljunggren; Gunnar Björk; Hugo Zbinden; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photonics; Fotonik;

    Sammanfattning : At the heart of quantum physics lies the principle of superposition, and at the heart of information theory lies the bit. Perhaps the most useful property of quantum systems is that they can be loaded with information bits, so-called qubits, that are indefinitely both 0 and 1 until a measurement is made. LÄS MER

  3. 22. Engineering superconducting qubits : towards a quantum machine

    Författare :Joachim Sjöstrand; Anders Karlhede; Denis Vion; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : A quantum computer is an information processing machine, much like an ordinary classical computer, but its function is based on quantum mechanical principles. To be able to construct such a machine would be a fantastic accomplishment---to have total control over a quantum system is a dream for both physicists and science-fiction enthusiasts. LÄS MER

  4. 23. Configurations in Quantum Information

    Författare :Kate Blanchfield; Ingemar Bengtsson; Erik Sjöqvist; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Sammanfattning : Measurements play a central role in quantum information. This thesis looksat two types: contextual measurements and symmetric measurements. Contextualityoriginates from the Kochen-Specker theorem about hidden variablemodels and has recently undergone a subtle shift in its manifestation. LÄS MER

  5. 24. Information Thermodynamics and Fluctuations in Quantum Dots

    Författare :David Barker; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stochastic thermodynamics; Maxwell s demon; quantum dot; charge sensing; information; feedback; Fysicumarkivet A:2022:Barker;

    Sammanfattning : In small systems with large fluctuations, the classical description of thermodynamics is no longer sufficient which has led to the development of stochastic thermodynamics. One important result from stochastic thermodynamics is that with measurement and feedback it is possible to use those fluctuations to extract work from a single heat bath coupled to the system. LÄS MER

  7. 25. Probing quantum criticality in heavy fermion CeCoIn5

    Författare :Akash Khansili; Andreas Rydh; Venkata Kamalakar Mutta; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Strongly correlated electron systems; heavy fermion; quantum criticality; Physics; fysik;

    Sammanfattning : Understanding the low-temperature properties of strongly correlated materials requires accurate measurement of the physical properties of these systems. Specific heat and nuclear spin-lattice relaxation are two such properties that allow the investigation of the electronic behavior of the system. LÄS MER