- Leading telcos are already experimenting with quantum technology
- Efforts are mostly put into trialling quantum communication
- There is also a significant focus on building defences against future quantum-based threats
LONDON – 10 July 2025 – The quantum era is near – and leading telcos are already eyeing the various opportunities this new technology will create. This is the main finding from ‘Q-Beat’, a new tracker of quantum technology deployments across telcos, launched by leading research and consulting company STL Partners.
The first edition of the tracker has covered 75 projects and announcements related to quantum technology by 29 telcos worldwide. “The most advanced telcos have already started investing talent, energy and money into quantum technology, which promises to open up new opportunities in the not-too-distant future,” comments Marina Koytcheva, research director at STL Partners.
The majority of the work – 80% of the recorded projects – is about deploying quantum technology to optimise operations or build new revenue streams in the future. The most common focus is exploring quantum communication and building small-scale trial networks, allowing quantum-secure transmission of data. For now, effort is mostly put into demonstrating quantum key distribution (QKD) via fibre optic networks. But some telcos experiment with quantum communication on mobile networks too. A few early clients from the financial sector are already on board, but the proposition will likely be of interest to many other industry sectors in the coming years.
In addition, some innovative telcos experiment with early-day quantum computers to optimise elements of their networks – be it cells, towers or satellites – to get the most from infrastructure investment and deliver the best possible service.
“Unfortunately, utilising quantum technology is on the roadmap not only of innovative businesses, but also of bad actors. Therefore, it is no surprise that a growing number of telcos put efforts into defence against future quantum threats, especially in the area of cybersecurity,” explains Koytcheva. STL Partners noted such efforts in 44% of the recorded quantum projects, with the majority directed at post-quantum cryptography (PQC). Some telcos are focusing on securing their own networks and operations, while others that see cybersecurity as an important element of their business are looking to build and offer post-quantum security solutions to their enterprise customers and even consumers.
Quantum tech ambitions are demonstrated by telcos all over the world, but operators in South Korea appear to be particularly active, with SK Telecom claiming the front position at present. However, there is also a flurry of announcements coming from the rest of Asia (especially Singapore, Japan and China), from major European telcos such as Deutsche Telekom, KPN, Orange, Telefónica, Telecom Italia and, most recently, Turkcell, as well as from North American giants AT&T and Verizon, among others. On the partner side, Toshiba’s name features most often in the first edition of the STL Partners’ Q-Beat tracker, but players such as Adtran, ID Quantique and Thales are also prominent.
“Having tasted success and praise for their fast deployment of generative AI, especially over the last year, telcos seem eager to become leaders in the utilisation of quantum technology, which suits their business well – both in terms of opportunities for the future and defence against the threats this technology will create,” concludes Koytcheva.
Global telco activity with quantum technology, split by type and phase

Learn more about STL Partners’ Q-Beat Telco deployment tracker here.
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STL Partners is a leading research and consulting company that focuses on the telecom industry and adjacent markets by helping telcos and their partners innovate, grow and stay ahead of the competition.