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Open Quantum Systems Decoherence
Superconducting Qubits
Decoherence of up to 8-qubit entangled states in a 16-qubit superconducting quantum processor
arXiv
Authors: Asier Ozaeta, Peter L. McMahon
Year
2017
Paper ID
24396
Status
Preprint
Abstract Read
~2 min
Abstract Words
83
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Abstract
We report on the coherence of Greenberger-Horne-Zeilinger (GHZ) states comprised of up to 8 qubits in the IBM ibmqx5 16-qubit quantum processor. In particular, we evaluate the coherence of GHZ states with N=1,ldots,8 qubits, as a function of a delay time between state creation and measurement. We find that the decay in coherence occurs at a rate that is linear in the number of qubits. This is consistent with a model in which the dominant noise affecting the system is uncorrelated across qubits.
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- We report on the coherence of Greenberger-Horne-Zeilinger (GHZ) states comprised of up to 8 qubits in the IBM ibmqx5 16-qubit quantum processor.
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