Quantum capacitive phase detector
arXiv:cond-mat/0408145 · doi:10.1103/PhysRevB.71.024530
Abstract
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 the 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.
5 pages, published form
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