Search for dissertations about: "qubits"
Showing result 1 - 5 of 66 swedish dissertations containing the word qubits.
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1. Engineering superconducting qubits : towards a quantum machine
Abstract : 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. READ MORE
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2. Superconducting qubits - measurement, entanglement, and noise
Abstract : In the early 1980’s, it was suggested that a computer obeying the laws of quantum mechanics would be able to solve problems beyond the capabilities of a classical computer. The novel ways in which such a quantum computer works relies on the quantum properties of the quantum bits (qubits) used to store the information. READ MORE
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3. Read-out of superconducting qubits - a quantum measurement process
Abstract : In this work we consider measurements on quantum systems emphasizingon read-out of superconducting qubits. The qubit is always coupled to anenvironment, containing a macroscopic number of degrees of freedom. Thisperturbs the qubit and destroys the phase coherence of the quantum state. READ MORE
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4. Photonic Qubits for Quantum Communication : Exploiting photon-pair correlations; from theory to applications
Abstract : For any communication, the conveyed information must be carried by some physical system. If this system is a quantum system rather than a classical one, its behavior will be governed by the laws of quantum mechanics. READ MORE
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5. Entanglement in quantum communication : preparation and characterization of photonic qubits
Abstract : 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. READ MORE