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arXiv · 1009.6126

14-qubit entanglement: creation and coherence

Thomas Monz·Philipp Schindler·Julio T. Barreiro·Michael Chwalla·Daniel Nigg·William A. Coish·Maximilian Harlander·Wolfgang Haensel·Markus Hennrich·Rainer Blatt
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Abstract

We report the creation of Greenberger-Horne-Zeilinger states with up to 14 qubits. By investigating the coherence of up to 8 ions over time, we observe a decay proportional to the square of the number of qubits. The observed decay agrees with a theoretical model which assumes a system affected by correlated, Gaussian phase noise. This model holds for the majority of current experimental systems developed towards quantum computation and quantum metrology.

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Thomas Monz, Philipp Schindler, Julio T. Barreiro, Michael Chwalla, Daniel Nigg, William A. Coish, Maximilian Harlander, Wolfgang Haensel, Markus Hennrich, Rainer Blatt. 2011-03-23. 14-qubit entanglement: creation and coherence. https://doi.org/10.1103/physrevlett.106.130506

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