Jason Chadwick
Jason D. Chadwick
Quantum computing Ph.D. student
University of Chicago
jchadwick@uchicago.edu

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Figure 1. (a) Depiction of a possible implementation of a narrow 7-dot-wide array of quantum dots, analogous to similar devices fabricated by Intel and HRL [27]-[29]. Electrons (black) are held in place at the plunger gates (light gray) and can interact with their neighbors (or shuttle to adjacent plungers) by manipulating the voltages on the barrier gates (orange). Single-electron transistors (green) allow for qubit readout on the two sides of the array. (b) SNAQ achieves similar performance to baselines while improving chip area efficiency and wiring efficiency. (c) SNAQ avoids the downside of a longer syndrome extraction cycle by enabling transversal CNOTs (tCNOTs), achieving significantly faster logical clock speeds compared to lattice-surgery-based approaches.