Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.030406
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Funding
- Natural Science and Engineering Research Council of Canada
- QuantumWorks
- Ontario Centres of Excellence
- Canadian Institute for Photonics Innovation
- Canadian Institute for Advanced Research
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When used in quantum state estimation, projections onto mutually unbiased bases have the ability to maximize information extraction per measurement and to minimize redundancy. We present the first experimental demonstration of quantum state tomography of two-qubit polarization states to take advantage of mutually unbiased bases. We demonstrate improved state estimation as compared to standard measurement strategies and discuss how this can be understood from the structure of the measurements we use. We experimentally compared our method to the standard state estimation method for three different states and observe that the infidelity was up to 1: 84 +/- 0: 06 times lower by using our technique than it was by using standard state estimation methods.
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