期刊
PHYSICAL REVIEW A
卷 87, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.87.062122
关键词
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资金
- Federal Program of the Russian Ministry of Education and Science [8393, 11.519.11.4009]
- European Union Seventh Framework Programme [308803]
- ERA.Net RUS Project NANOQUINT
- NATO project [EAP.SFPP 984397]
- RFBR [12-02-31041, 12-02-31792]
- Dynasty foundation
- Google European Doctoral Fellowship programme
We report an experimental realization of an adaptive quantum state tomography protocol. Our method takes advantage of a Bayesian approach to statistical inference and is naturally tailored for adaptive strategies. For pure states, we observe close to N-1 scaling of infidelity with overall number of registered events, while the best nonadaptive protocols allow for N-1/2 scaling only. Experiments are performed for polarization qubits, but the approach is readily adapted to any dimension.
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