Table 3. Experimental and simulated results for the quantum private queries. The following figures of merit are used: the average number of bits learned by the user per query, , the average proportion of the database where the user has significant partial information (i.e. e_k ≤ t_D), , and the failure probability (i.e. that the user learns zero bits), P₀.

	µ = 0.95 ± 0.047		µ = 9.5 ± 0.47		low-noise
	experimental	simulated	experimental	simulated	simulated
(bits)	4.1 ± 2.4	3.2 ± 1.1	3.9 ± 3.1	3.5 ± 1.9	4.35
(%)	6.1 ± 0.25	6.1 ± 0.25	6.3 ± 1.4	6.3 ± 1.3	0.96
P0 (%)	9.1 ± 9.1	8.8	8.7 ± 2.9	9.4	1.29