14-Qubit Entanglement: Creation and Coherence 论文

详细信息

发表期刊/会议

Physical Review Letters

发表日期

2011-03-31

发表年份

2011

摘要

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.