Will the quantum internet become a mass market, or specialised infrastructure?
Why does the quantum internet so quickly evoke the image of a "quantum router" in every home?
When people talk about the quantum internet, a familiar image emerges quickly: at some point a "quantum router" in every household , as a logical continuation of today's internet . That is plausible. Looking back at the last century, the first computers were entire rooms, not comparable to today's size and capability. Today's quantum technologies evoke a similar picture: abstract, highly technological elements wired together with cables, cooling systems and lasers. So why not a "quantum router" in every home, just like today's Wi-Fi router?
Why is that vision not self-evident?
Well, because quantum communication is substantially more complex . It is not simply the existing network with an added layer of security . It rests on physical principles that impose new requirements on range, losses, integration and the detection of single photons . It is therefore by no means certain that a broad consumer market will emerge. Equally plausible is another path: central hubs that secure critical links — between data centres, public authorities, industry or security-relevant infrastructure.
What does this distinction mean for the underlying technology?
From a technology perspective, this is an important distinction. Depending on whether quantum communication grows as specialised infrastructure or as a broad market , the requirements on the underlying components shift. For central networks, reliability, system integration and performance come first. For broader scaling, cost, robustness and industrial manufacturability also become decisive.
Where is GeQD's strategic core?
This is where our strategic core lies. The future of the quantum internet will be decided not only at the protocol or application layer, but also at the component level . Single-photon detectors are among these key components . They co-determine whether quantum networks remain confined to a few highly specialised environments, or whether they can grow into viable infrastructure over the long term.
What does that mean for GeQD's work?
For GeQD, this is the starting point. We are working on a photonic detector platform that is not only convincing in the lab, but is scalable by design . This platform logic — from research to larger system applications — is the small but essential contribution we make to shaping the future of quantum technology .
What is the truly decisive question?
The decisive question is therefore not whether every household will need a quantum router tomorrow. The more important question is which technological building blocks need to be developed today so that a vision can become a robust market at all.
Universität Stuttgart – Institut für Halbleitertechnik
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