11 papers
Qubit Loss Inference with Stabilizer Codes without Leakage Detection Units
Shin Nishio, Takeaki Uno, Fumiyoshi Kobayashi +2
Qubit loss occurs when the physical carrier of a qubit leaves the computational system without directly revealing the event's location. Such errors are a major obstacle to fault-to…
A Neutral-Atom Quantum Compiler with Application-Specific Layout and Hub-Assisted Shuttling
Takahiko Satoh, Takaharu Yoshida
Compiling arbitrary-connectivity NISQ circuits onto monolithic single-zone neutral-atom devices is constrained by a finite interaction range and a minimum separation between simult…
Treewidth-Aware Gate Cut Selection for Reducing Transpilation Overhead on Superconducting Quantum Devices
Hana Ebi, Shin Nishio, Takahiko Satoh
On superconducting quantum devices with sparse qubit connectivity, transpilation of long-range two-qubit interactions inserts additional SWAP gates, increasing hardware cost and ex…
Dense packing of the surface code: code deformation procedures and hook-error-avoiding gate scheduling
Kohei Fujiu, Shota Nagayama, Shin Nishio +2
The surface code is one of the leading quantum error correction codes for realizing large-scale fault-tolerant quantum computing (FTQC). One major challenge in realizing surface-co…
QuBridge: Layer-wise Fidelity Decomposition in Quantum Computation Pipeline
Kisho Sotokawa, Hideaki Kawaguchi, Shin Nishio +1
Running a quantum circuit on current hardware involves a sequence of engineering decisions, each with tunable parameters and distinct error characteristics. Existing tools optimize…
Digital Annealer-Assisted Accuracy-First Quantum Circuit Transpilation with Integrated QUBO Mapping and Routing
Kazuma Watanabe, Hideaki Kawaguchi, Shin Nishio +1
In the Noisy Intermediate-Scale Quantum (NISQ) era, limited qubit counts and high gate error rates directly constrain circuit fidelity, making the minimization of CNOT gate counts…