Toward a 2D Local Implementation of Quantum LDPC Codes

Learn about quantum low-density parity-check (qLDPC) codes and their implementation in 2D architectures through this conference presentation from the Theory of Quantum Computation Conference 2024. Explore how geometric locality impacts code performance and physical realization in quantum computing, with a focus on a novel bilayer architecture designed to reduce operational overhead when restricted to 2D local gates. Discover the advantages of quasi-cyclic qLDPC codes in parallel syndrome measurement schemes using fast local operations and classical communication routing. Examine circuit-level simulation results that demonstrate how these codes can achieve logical error rates comparable to surface codes while requiring fewer physical qubits. The presentation, delivered by researchers Noah Berthusen, Dhruv Devulapalli, Eddie Schoute, and Andrew M. Childs, offers valuable insights into advancing fault-tolerant quantum computing through innovative error correction protocols.