Adaptive estimation of qubits by symmetry measurements

Details Adaptive estimation of qubits by symmetry measurements Adaptive estimation of qubits by symmetry measurements

2008-11-14

arxiv.org/abs/0811.2360v3

Phys. Rev. A 78, 064303 (2008)

Physics

Quantum Physics

5 pages, 3 figures; Version 3 with minor corrections

Scientific paper

10.1103/PhysRevA.78.064303

We analyze quantum state estimation for finite samples based on symmetry
information. The used measurement concept compares an unknown qubit to a
reference state. We describe explicitly an adaptive strategy, that enhances the
estimation fidelity of these measurements.

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