14-qubit entanglement: creation and coherence

Details 14-qubit entanglement: creation and coherence 14-qubit entanglement: creation and coherence

2010-09-30

arxiv.org/abs/1009.6126v2

Phys. Rev. Lett. 106, 130506 (2011)

Physics

Quantum Physics

4 pages, 2 figures, 1 table

Scientific paper

10.1103/PhysRevLett.106.130506

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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