Experimental Study of Optimal Measurements for Quantum State Tomography

Physical Review Letters
H Sosa-MartinezPoul S Jessen

Abstract

Quantum tomography is a critically important tool to evaluate quantum hardware, making it essential to develop optimized measurement strategies that are both accurate and efficient. We compare a variety of strategies using nearly pure test states. Those that are informationally complete for all states are found to be accurate and reliable even in the presence of errors in the measurements themselves, while those designed to be complete only for pure states are far more efficient but highly sensitive to such errors. Our results highlight the unavoidable trade-offs inherent in quantum tomography.

References

Jun 1, 2001·Physical Review Letters·G KloseP S Jessen
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Apr 30, 2015·Nature Communications·D RistèL DiCarlo
Jul 22, 2015·Physical Review Letters·B E AndersonPoul S Jessen
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Citations

Jul 1, 2020·Physical Review Letters·Nathan K LysnePoul S Jessen
Nov 26, 2019·Physical Review Letters·Shanchao ZhangShi-Liang Zhu
Sep 7, 2019·Physical Review Letters·Philipp KunkelMarkus K Oberthaler

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