Presentation Information

[A-2-11]QuStitch: An Interactive Multi-Level Visualization for Lattice-Surgery Quantum Computation

◎Seita Tsuboi1, Leo Itoh1, Takuya Kasamura1, Junichiro Kadomoto1 (1. the university of Tokyo)

Keywords:

quantum information theory,quantum error-correcting codes,surface codes,lattice surgery

In fault-tolerant quantum computation, quantum circuits are implemented through logical-qubit encoding and logical operations rather than directly executed on devices. In surface-code lattice surgery, logical qubits are represented as two-dimensional patches, and logical operations are realized by patch operations such as merging, splitting, and boundary deformation. Therefore, circuit diagrams alone make it difficult to understand how gates are translated into patch operations.
This paper presents QuStitch, a web-based visualization system for lattice-surgery quantum computation. QuStitch synchronously displays the input circuit, transformed circuit, patch operations, stabilizer configurations, and quantum instruction set architecture (QISA) instructions by associating them with common execution events. The backend generates these data with timing information, and the frontend updates each view according to the selected event. This enables users to trace the correspondence between circuit-level operations, patch behavior, stabilizer changes, and instructions. QuStitch supports learning lattice surgery and debugging circuit transformation and instruction generation.