Probabilistic minimal disturbance measurement of symmetrical qubit states
Radim Filip, Ladislav Mišta, F. De Martini, Marco Ricci, Fabio Sciarrino · Physical Review A · 2006
We derive fidelity tradeoffs for probabilistic minimal disturbance measurements for certain discrete sets of symmetrical single qubit states. We propose and experimentally demonstrate a simple linear optical scheme saturating these tradeoffs in which the degree of disturbance is controlled only by measurement of a single ancillary photon.