Unifying communication paradigms in measurement-based delegated quantum computing

Key findings from this study

• The study found that prepare-and-send and receive-and-measure settings in DQC admit systematic translation between one another, enabling protocol conversion across architectures.
• The authors demonstrate that setting-dependent theoretical constraints are not inevitable, and both communication paradigms can be treated within a unified framework.
• The researchers show that protocols can be constructed to operate simultaneously in both distributional approaches, expanding the design flexibility for delegated quantum computing implementations.

Overview

Delegated quantum computing enables clients with limited quantum resources to offload computations to remote quantum servers while maintaining input blindness. Measurement-based quantum computing provides a natural framework for implementing such delegation across three sequential stages: qubit preparation, entanglement to create the resource state, and measurement-based computation. Two architectural approaches distribute these stages differently: prepare-and-send (client prepares and transmits qubits) and receive-and-measure (client receives qubits and performs measurements). Prior work examined each setting independently without establishing whether their theoretical requirements and constraints are inherently distinct.

Methods and approach

The authors implemented core DQC protocol components within the setting where each had not been previously studied. This dual implementation enabled translation between prepare-and-send and receive-and-measure architectures. The method systematized how cryptographic and experimental requirements map across both distributional paradigms.

Results

The study demonstrates that protocols designed for one communication setting can be reformulated to operate in the alternate setting through systematic component implementation. This translation capability reveals that setting-dependent constraints are not inevitable features of the DQC framework. The authors establish a unified theoretical structure encompassing both approaches, showing they represent different parameterizations of a broader protocol family rather than fundamentally distinct paradigms.

The proposed method enables researchers to construct protocols simultaneously satisfying both architectural patterns. This dual-mode construction capability removes barriers to protocol design that previously required choosing a single distributional approach. The framework facilitates identification of which theoretical and experimental constraints arise from the DQC mechanism itself versus those imposed by specific communication architecture choices.

Implications

The interchangeability of prepare-and-send and receive-and-measure settings expands the design space for delegated quantum computing implementations. Systems designers can now select communication architectures based on experimental feasibility and infrastructure constraints rather than fundamental theoretical limitations. This flexibility enhances compatibility with diverse quantum hardware platforms and network topologies.

Unifying these paradigms strengthens the theoretical foundation for delegated quantum computing as a practical technology. The translation methodology enables existing protocol research to contribute insights across both settings simultaneously. This consolidation reduces fragmentation in the theoretical literature and accelerates development of implementable DQC systems by allowing techniques from either setting to inform protocol engineering in both.

Scope and limitations

This summary is based on the study abstract and available metadata. It does not include a full analysis of the complete paper, supplementary materials, or underlying datasets unless explicitly stated. Findings should be interpreted in the context of the original publication.