Quantum network utility: A framework for benchmarking quantum networks

Area of Science:

• Quantum Information Science
• Network Engineering
• Economic Analysis

Background:

• Quantum networks aim to connect users via quantum channels.
• A need exists for standardized metrics to compare different quantum network performances.
• Current benchmarking approaches lack a comprehensive framework for diverse applications.

Purpose of the Study:

• To propose a general framework for quantifying quantum network performance.
• To introduce the quantum network utility metric to assess social and economic value.
• To provide a foundation for guiding and assessing quantum network development.

Main Methods:

• Developed a framework for estimating the value created by quantum network connections.
• Defined the quantum network utility metric [Formula: see text].
• Investigated distributed quantum computing as a case study, determining scaling laws.

Main Results:

• The proposed framework quantifies the value of quantum networks across various applications.
• The quantum network utility metric captures social and economic benefits.
• Scaling laws indicate distributed edge quantum computing surpasses classical equivalents.

Conclusions:

• The utility-based framework offers a standardized approach to benchmarking quantum networks.
• The findings support the potential of distributed quantum computing.
• This framework will guide future quantum network technologies and designs.