Limitations in Quantum Computing from Resource Constraints

Fault-tolerant schemes can use error correction to make a quantum computation arbitrarily ac- curate, provided that errors per physical component are smaller than certain threshold and in- dependent of the computer size. However in current experiments, resource limitations like energy, volume or available bandwidth induce rates typically grow as grows. Taking into account these constraints, we show amount be opti- mized, leading maximum attainable computational accuracy. We find this for generic situations where noise is scale-dependent. By inverting logic, provide experimenters with tool finding minimum resources required run an algorithm given When combined full-stack computing model, provides basis energetic estimates future large-scale computers.