Displaying items by tag: Measurement

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Superconducting qubits are most commonly measured by employing their off-resonant coupling to a readout resonator. Recent experimental results have shown readout times as low as 50ns for single qubits. In this paper, Heinsoo et al. experimentally show how multiple- and selective-readout of any (sub-)set of qubits can be realized via high-fidelity rapid multiplexed readout: probing several readout resonators coupled to a single feedline with a multi-frequency pulse. Applications can be found in quantum error correction, iterative quantum fourier transforms and entanglement-distillation or -swapping.

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