Search for dissertations about: "superconducting qubit"
Showing result 21 - 25 of 29 swedish dissertations containing the words superconducting qubit.
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21. Collective Electron Dynamics in Mesoscopic Systems
Abstract : This work is devoted to a theoretical investigation of collective electron dynamics in low dimensional materials and mesoscopic structures. A common feature of these studies is the focus on the properties of the low energy dynamics of conduction electrons. One class of studied materials is the high-Tc superconductor Nd2CuO4 and related compounds. READ MORE
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22. The Josephson parametric oscillator - From microscopic studies to single-shot qubit readout
Abstract : Circuit quantum electrodynamics (cQED) is a prominent platform for quantum information processing, in which microwave photons are confined into resonant cavities coupled to superconducting quantum bits (qubits). The large effective dipole moment of the qubit, in combination with the high energy density of the quasi 1-D resonator allow these systems to enter the so-called strong coupling regime. READ MORE
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23. Effects of the environment on quantum systems: decoherence, bound states and high impedance in superconducting circuits
Abstract : Superconducting circuits in the quantum regime represent a viable platform for microwave quantum optics, quantum simulations and quantum computing. In the last two decades, a large effort brought this architecture from an academic curiosity to concrete technology. READ MORE
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24. Superinductance and fluctuating two-level systems: Loss and noise in disordered and non-disordered superconducting quantum devices
Abstract : 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. READ MORE
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25. Superconducting Qubits: Charge read-out and backaction
Abstract : For quantum computers to become reality, not only do the qubits have to be carefully engineered to be well isolated during operation time, but this also puts great strain on the measurement setup. We have looked at the backaction from a single-electron transistor (SET), operated both in the normal and in the superconducting state, on a single Cooper-pair box qubit. READ MORE