Extended Data Fig. 2: Tweezer uniformity details.

a, The tweezers created by two fibre amplifiers are labelled on the averaged atomic image shown in Fig. 1b. We create 11,513 (488) tweezers with laser light at 1,061 nm (1,055 nm), as described in the ‘Tweezer generation’ section in Methods. b, WGS weights given to tweezers during the tweezer homogenization procedure, as a function of angular distance from the zeroth-order reflection off the SLM, with the physical distance shown on the upper axis. In teal are plotted the weights obtained after the tweezer depths are made uniform on the basis of loading probability. In yellow is shown the weight compensation that would be expected on the basis of diffraction efficiency calculations assuming blazed gratings are used for displacement. c, Per-site loading probability array map and its histogram. We feed back on the WGS weights based on the loading rate per site to make the trap depth uniform. We see an average loading probability per site of 51.2% with a relative standard deviation of 3.4%. The lowest loading probability is 25.1% for one tweezer, which is the only tweezer not shown in the histogram but included in the quoted average. This tweezer does not exhibit a substantial difference in imaging survival probability, coherence time or single-qubit gate fidelity (Extended Data Figs. 5a and 8). Three tweezers in the array are excluded for the data shown in this work, as they are affected by leakage from the zeroth order of the SLM on the 1,061-nm tweezer pathway, resulting in 11,998 usable sites out of 12,001 generated sites. d, Per-site tweezer depth map and its histogram, obtained by measuring the differential light shift on F = 4 ↔ F′ = 4 D2 transition. We see an average trap depth of k_B × 0.18(2) mK with a standard deviation of 11.4% across the sites.