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Superconducting Qubits
Open Quantum Systems Decoherence
Ideal Quantum non-demolishing measurement of a flux qubit at variable bias
arXiv
Authors: Ying-Dan Wang, Xiaobo Zhu, Christoph Bruder
Year
2010
Paper ID
28781
Status
Preprint
Abstract Read
~2 min
Abstract Words
63
Citations
N/A
Abstract
We propose a scheme to realize a quantum non-demolition (QND) measurement of a superconducting flux qubit by a Josephson bifurcation amplifier. Our scheme can implement a perfect QND measurement for a qubit subject to a variable magnetic bias. Measurement back-action induced qubit relaxation can be suppressed and hence the QND fidelity is expected to be high over a wide range of bias conditions.
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- This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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- We propose a scheme to realize a quantum non-demolition (QND) measurement of a superconducting flux qubit by a Josephson bifurcation amplifier.
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