Minimal qubit tomography

Details Minimal qubit tomography Minimal qubit tomography

2004-05-16

arxiv.org/abs/quant-ph/0405084v2

Physical Review A 70, 052321 (2004)

Physics

Quantum Physics

14 pages, 10 figures; final version

Scientific paper

10.1103/PhysRevA.70.052321

We present, and analyze thoroughly, a highly symmetric and efficient scheme for the determination of a single-qubit state, such as the polarization properties of photons emitted by a single-photon source. In our scheme there are only four measured probabilities, just enough for the determination of the three parameters that specify the qubit state, whereas the standard procedure would measure six probabilities.

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