Low-crosstalk bifurcation detectors for coupled flux qubits

Details Low-crosstalk bifurcation detectors for coupled flux qubits Low-crosstalk bifurcation detectors for coupled flux qubits

2010-08-06

arxiv.org/abs/1008.1277v1

Appl. Phys. Lett. 96, 123508 (2010); (3 pages)

Physics

Condensed Matter

Superconductivity

Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires pri

Scientific paper

10.1063/1.3367875

We present experimental results on the crosstalk between two AC-operated dispersive bifurcation detectors, implemented in a circuit for high-fidelity readout of two strongly coupled flux qubits. Both phase-dependent and phase-independent contributions to the crosstalk are analyzed. For proper tuning of the phase the measured crosstalk is 0.1 % and the correlation between the measurement outcomes is less than 0.05 %. These results show that bifurcative readout provides a reliable and generic approach for multi-partite correlation experiments.

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