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Conference on Lasers and Electro-Optics

Quantum Communication: real-world applications and academic research

Nicolas Gisin

Published Jan 1, 2009• 0 citations
Publisher

Abstract

The field of quantum communication is mature enough to be clearly divided into an applied side, around Quantum Key Distribution, and a fundamental research program. The applied side is driven by real-world applications with concerns like reliability and costs. The second aspect is still mainly curiosity driven and aims, among other things, at extending the distance of fiber-based quantum communication to continental (or even inter-continental) distances. In this tutorial I will give an intuitive perspective on some recent advances in the state of the art.

DOI
10.1364/cleo.2009.cmo4

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The field of quantum communication is mature enough to be clearly divided into an applied side, around Quantum Key Distribution, and a fundamental research program. The applied side is driven by real-world applications with concerns like reliability and costs. The second aspect is still mainly curiosity driven and aims, among other things, at extending the distance of fiber-based quantum communication to continental (or even inter-continental) distances. In this tutorial I will give an intuitive perspective on some recent advances in the state of the art.
Quantum communication is the art of transferring a quantum state from one location to a distant one. Commercial applications cover Quantum Random Number Generators (QRNG) and Quantum Key Distributions (QKD). Academic research focuses mostly on two topics. First, quantum repeaters that should allow one to break the 500 Km distance limit of direct QKD; the grand challenge is second-long quantum storage with 90% efficiency. A second topic is Device Independent Quantum Information Processing, another intellectually fascinating prospect.
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Quantum communications is the art of transferring a quantum state from one location to a distant one. On the application side, quantum communication is already relatively advanced with Quantum Random Number Generators and Quantum Key Distribution (QKD) systems having found niche markets. However, on the academic research side quantum communication has still a long way to go until a functional quantum repeater can extend the distances to continental scales. Quantum repeaters are based on quantum teleportation, the most fascinating application of entanglement. Additionally, quantum repeaters require quantum memories with memory times close to a second; this represents one grand challenge for quantum communication.
This position paper examines the substantial divide between academia and industry within quantum software engineering. For example, while academic research related to debugging and testing predominantly focuses on a limited subset of primarily quantum-specific issues, industry practitioners face a broader range of practical concerns, including software integration, compatibility, and real-world implementation hurdles. This disconnect mainly arises due to academia's limited access to industry practices and the often confidential, competitive nature of quantum development in commercial settings. As a result, academic advancements often fail to translate into actionable tools and methodologies that meet industry needs. By analyzing discussions within quantum developer forums, we identify key gaps in focus and resource availability that hinder progress on both sides. We propose collaborative efforts aimed at developing practical tools, methodologies, and best practices to bridge this divide, enabling academia to address the application-driven needs of industry and fostering a more aligned, sustainable ecosystem for quantum software development.