Browsing by Author "Hakonen, Pertti j."

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    Quantum capacitive phase detector
    (American Physical Society (APS), 2005) Roschier, Leif; Sillanpää, Mika A.; Hakonen, Pertti j.; Teknillisen fysiikan laitos; Department of Applied Physics; Perustieteiden korkeakoulu; School of Science
    We discuss how a single Cooper-pair transistor may be used to detect the superconducting phase difference by using the phase dependence of the input capacitance from gate to ground. The proposed device has a low power dissipation because its operation is in principle free from quasiparticle generation. According to the sensitivity estimates, the device may be used for efficient qubit readout in a galvanically isolated and symmetrized circuit.