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quant-ph2025
Handling fabrication defects in hex-grid surface codes
Oscar Higgott, Benjamin Anker, Matt McEwen +1
Recent work has shown that a hexagonal grid qubit layout, with only three couplers per qubit, is sufficient to implement the surface code with performance comparable to that of a t…
quant-ph2025
Constructive interference at the edge of quantum ergodic dynamics
Dmitry A. Abanin, Rajeev Acharya, Laleh Aghababaie-Beni +262
Quantum observables in the form of few-point correlators are the key to characterizing the dynamics of quantum many-body systems. In dynamics with fast entanglement generation, qua…
quant-ph2024
Resilience of the surface code to error bursts
Shi Jie Samuel Tan, Christopher A. Pattison, Matt McEwen +1
Quantum error correction works effectively only if the error rate of gate operations is sufficiently low. However, some rare physical mechanisms can cause a temporary increase in t…