2022/02/21 by R. J. Epstein, Ryan J. Epstein, Epstein, Ryan J.
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #quant-ph
paper · pdf · doi:10.48550/arxiv.2202.10486
arxiv created 2022/02/21 · openalex publication_date 2022/02/21 · arxiv updated 2022/02/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Scaling up quantum computing hardware is hindered by the narrow operating margins of current quantum components. Here, we introduce a composite qubit and gate scheme that achieves wide margins by use of transistor-like nonlinearities to suppress the effects of both ambient noise and control signal imperfections. This is accomplished by adiabatic deformation of subsystem codes based on anti-commuting two-body interactions. We focus on a resource-effcient variation that exploits biased noise and preserves bias under gate operation. As a proof of concept, we present simulations of a superconducting circuit that demonstrates core elements of the approach and discuss the challenges of experimental implementation.