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This is a Quantitative Study study.

October 2, 2025Open Access

CLASS: A Controller-Centric Layout Synthesizer for Dynamic Quantum Circuits

Key Points

CLASS achieves a 100% reduction in communication latency while maintaining low operation increases.
Evaluation results show only a 2.10% average rise in operations with the implementation of CLASS.
The two-stage framework employs hypergraph-based modeling and heuristic-based graph partitioning.
CLASS addresses limitations in traditional layout synthesis focused mainly on circuit depth.

Abstract

Layout Synthesis for Quantum Computing (LSQC) is a critical component of quantum design tools. Traditional LSQC studies primarily focus on optimizing for reduced circuit depth by adopting a device-centric design methodology. However, these approaches overlook the impact of classical processing and communication time, thereby being insufficient for Dynamic Quantum Circuits (DQC). To address this, we introduce CLASS, a controller-centric layout synthesizer designed to reduce inter-controller communication latency in a distributed control system. It consists of a two-stage framework featuring a hypergraph-based modeling and a heuristic-based graph partitioning algorithm. Evaluations demonstrate that CLASS effectively reduces communication latency by up to 100% with only a 2.10% average increase in the number of additional operations.

CLASS: A Controller-Centric Layout Synthesizer for Dynamic Quantum Circuits

Key Points

Abstract

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