Search for dissertations about: "quantum mechanics"
Showing result 6 - 10 of 187 swedish dissertations containing the words quantum mechanics.
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6. Exploring the Set of Quantum States
Abstract : Quantum mechanical properties of finite dimensional quantum systems are used within the field of quantum information. In this thesis the set of states (density matrices) for such systems is studied and described, largely in geometrical terms. READ MORE
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7. Quantum Chaos and Dissipation in Finite Fermi Systems
Abstract : We address the problem of the dissipative character of collective motion in finite Fermi systems. We study this problem from the point of view of chaotic features of the fermionic degrees of freedom of the many-body Fermi systems. READ MORE
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8. Microwave Gaussian quantum metrology
Abstract : With increasingly sensitive measurements being made possible by technological development, there arises situations where the effects of quantum mechanics have to be taken into account. While quantum mechanics tells us that there are fundamental limits of measurement sensitivity, it also gives us the tools to constructively push the same limits for experimental systems. READ MORE
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9. Gaps, Traps and Lattices - Correlations in Small Quantum Systems
Abstract : This dissertation investigates properties of two-dimensional many-body systems. Studies are performed using the Spin-Density Functional Theory with the Local Spin-Density Approximation, and numerical exact diagonalization. READ MORE
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10. Quantum technologies for secure communications
Abstract : Quantum technologies promise to revolutionize a variety of fields such as metrology, cryptography or computing, among others. The resources that quantum mechanics offers allow us to design faster optimization algorithms, to improve security in communications, and to measure quantities beyond the grasp of current technology. READ MORE