Always fun waiting for Scott Aaronson to explain why the latest QC paper is bullshit. Until then can any Quantum Information experts here provide some background? I read the paper but don’t trust my intuition with these kind of things.
><i>The exemplary outcome probabilities 𝑃𝑖𝑗=|⟨𝑏𝑖𝑏𝑗|𝜓̃ 0⟩|2 and 𝑃𝑖𝑗𝑘=|⟨𝑏𝑖𝑏𝑗𝑏𝑘|𝜓̃ 0⟩|2, 𝑖,𝑗,𝑘=0,1 obtained in a real experiment for the 2- and 3-qubit models are shown on the Fig. 3E. One can see that the probability for observing the correct final state |0…0⟩ is less than 100% and for 2- and 3-qubit experiment are given by 85.3±0.4% and 49.1±0.6% correspondingly.</i><p>Does this mean that the 3 qubit model is predicted to only get the correct result for less than half the times it is asked?