April 30, 2024 | C. Poole, T. M. Graham, M. A. Perlin, M. Otten, and M. Saffman
The paper proposes an implementation of bivariate bicycle codes using long-range Rydberg gates between stationary neutral atom qubits. The authors introduce an optimized layout of data and ancilla qubits that reduces the maximum Euclidean communication distance needed for non-local parity check operators. An optimized Rydberg gate pulse design enables CZ entangling operations with a fidelity of \(\mathcal{F} > 0.999\) at a distance greater than 12 μm. The combination of these optimizations leads to a quantum error correction (QEC) cycle time of approximately 1.2 ms for a [[144, 12, 12]] code, which is an order of magnitude improvement over previous designs. The paper also discusses the optimization of the qubit layout, the fidelity of Rydberg-mediated CZ gates, and the concurrency of gate operations. The estimated QEC cycle time is influenced by the availability of fast photonic beam switching, and further improvements are expected with advancements in optical technology.The paper proposes an implementation of bivariate bicycle codes using long-range Rydberg gates between stationary neutral atom qubits. The authors introduce an optimized layout of data and ancilla qubits that reduces the maximum Euclidean communication distance needed for non-local parity check operators. An optimized Rydberg gate pulse design enables CZ entangling operations with a fidelity of \(\mathcal{F} > 0.999\) at a distance greater than 12 μm. The combination of these optimizations leads to a quantum error correction (QEC) cycle time of approximately 1.2 ms for a [[144, 12, 12]] code, which is an order of magnitude improvement over previous designs. The paper also discusses the optimization of the qubit layout, the fidelity of Rydberg-mediated CZ gates, and the concurrency of gate operations. The estimated QEC cycle time is influenced by the availability of fast photonic beam switching, and further improvements are expected with advancements in optical technology.