Figure 3: Success probability for each anneal time as a function of temperature.
From: Thermally assisted quantum annealing of a 16-qubit problem

Final ground-state probability as a function of temperature for, from top to bottom, tf=500, 200, 100, 50, 20, 10, 5, 2, 1, 0.5, 0.2, 0.1, 0.05, 0.02 and 0.01 ms. The measured temperatures are T=19.9, 24.5, 29.7, 34.9, 40.0, 45.0, 50.3, 60.9, 70.6, 79.7, 93.3 and 100.8 mK. An initial enhancement of the performance is observed with increasing T up to Tpeak∼40 mK, in agreement with the theoretical expectation depicted in Fig. 1. The blue squares are linear extrapolations of the curves to T=0, subject to 0≤PGM≤1. The error bars depict twice the s.e.m., assuming each sample is independent.