Intertangle

Entanglement-based quantum connectivity

Securing communications, empowering quantum devices

What We Do

Intertangle is building quantum networking and communications systems, applying breakthrough technology to existing infrastructure.

We’re developing a readily customisable photonic platform for generating, distributing, and measuring entanglement, the resource that lets quantum devices connect reliably to each other over deployed infrastructure. This is delivered as a system, integrating entanglement sources, entanglement measurement modules, the control software that runs them, and the logging that keeps a record of every outcome.

Our Technology

At the core of our platform is a multi-mode approach to entanglement: generating and measuring entangled photons across multiple properties of light within the same fibre, rather than a single channel. It’s a similar principle to how classical networks multiplex channels to increase capacity, and it gives our systems better noise resistance and higher information capacity than conventional single-mode approaches. The platform’s architecture is also designed to be flexible enough to support multipartite entanglement, distributed to more than two parties at once, for larger multi-user networks.

What We Offer

Robust operation

Our systems are benchmarked against industry-leading standards for entanglement quality and generation rate. That performance is engineered to hold steady beyond the lab bench, not just as a one-off result under ideal conditions.

Trust and Control

We’re developing simple-to-operate tools for characterising and certifying the quantum properties of light, so measurement doesn’t require a specialist.

Delivered as Entanglement-as-a-Service, hardware paired with automated, customisable control software, so you’re not left integrating a black box on your own.

Increased Functionality

Our platform is multimodal by design. Harnessing multiple properties of light, polarisation and spatial structure, lets us provide quantum light sources that adjust to your needs, with better tolerance to noise and loss than single-mode approaches. That same flexibility carries through the architecture, letting it scale from a single link to multi-nodal networks as your requirements grow.

Easy Integration

Our systems are built for drop-in compatibility with deployed infrastructure, fibre or free-space, operating at 810 nm or 1550 nm depending on the application. The same design adapts across network scales, from short-distance links to long-distance deployment, without needing new infrastructure built around it.

Validated in the Field

In 2025, we ran the first real-world test of our entanglement platform at BT’s Adastral Park research park.

Using both the polarisation and the spatial structure of light, our benchtop system demonstrated multimodal entanglement distribution outside the lab — a proof-of-principle step toward robust and high-capacity quantum connectivity.

BT named it among its “major strides” in UK quantum readiness for 2025, “validating how entanglement can support new forms of secure communication and information processing”.

Benchtop Multimodal Entanglement System

Polarisation + spatial entanglement, generated, distributed, and certified using off-the-shelf components over commercial fibre. Operating at 810 nm for high-efficiency APD-based detection and readily adaptable to the telecom band, the system was validated for intra-data-centre-scale performance.

Our account of the trial:

“From Curiosity to Capability: Taking Quantum Beyond the Lab”

We’re proud to partner with Intertangle to advance entanglement-based quantum technology

Andrew Lord

Senior Manager for Optical Networks and Quantum Research, BT

What’s Next

Download our technical brochure

Our current prototype delivers leading performance in an architecture built toward multi-node and multi-modal quantum networks. It pairs a high-fidelity polarisation entanglement source with receiver modules and control software in one 19-inch rack-mount unit, built for long-distance deployment over standard telecom fibre. 

Ready for external trials in October 2026!

Intertangle Team

We are a team from the Institute of Photonics and Quantum Sciences at Heriot-Watt University, Scotland. We are experts in creating advanced quantum light sources and entanglement-based tools to enable practical quantum technologies.

Dr Natalia Herrera Valencia

Dr Natalia Herrera Valencia

Project Lead

Bio

Dr. Natalia Herrera Valencia is a postdoctoral researcher at the Beyond Binary Quantum Information Laboratory at Heriot-Watt University. 

With nearly a decade of experience in quantum photonics, she has worked across research groups in five countries. She holds a B.Sc. in Physics from the National University of Colombia, an M.Sc. in Photonics from the Europhotonics Erasmus Mundus programme, and a PhD from Heriot-Watt University, where she received an award for outstanding research contribution in 2023.

Building on this background, she combines technical and commercial insight to lead the technological and business development of Intertangle. Through Innovate UK’s ICURe and Scottish Enterprise’s High Growth Spinout Programme, she has helped drive Intertangle’s early strategy, with UKRI and EPSRC grants supporting technology development and contributing to over £600k in pre-spinout funding.

Dr Joseph Ho

Dr Joseph Ho

Technical Lead

Bio

Joseph is an early-career researcher who joined the Edinburgh Mostly Quantum Laboratory at Heriot-Watt University to work on developing technologies for producing multi-photon entanglement which can be deployed over fibre-based networks for quantum communication applications. He completed his PhD in Australia with Professor Geoff Pryde, where he worked on building an all-optical quantum Fredkin gate using highly entangled photon pair sources. 

Prof. Mehul Malik

Prof. Mehul Malik

Scientific advisor

Bio

Mehul is a world-renowned expert in quantum technologies based on light. He leads the Beyond Binary Quantum Information Laboratory (BBQLab) at Heriot-Watt University. He is a Royal Academy of Engineering Chair in Emerging Technologies, Fellow of Optica (formerly the Optical Society of America), and an Associate Editor for the journal Optica. He has won several awards for his research contributions, including the Royal Society of Edinburgh Early Career Medal in the Physical and Engineering Sciences and The Blavatnik Award for Young Scientists in the UK. He has held several prestigious grants including the ERC Starting grant, an EPSRC Early Career Fellowship, and a Marie-Sklowdowska Curie fellowship in the group of 2022 Physics Nobel Laureate Anton Zeilinger. He is also a co-Investigator in two UK National Quantum Technology Hubs: Integrated Quantum Networks (IQN) and Quantum Imaging, Sensing, and Timing (QuSIT).

Prof. Alessandro Fedrizzi

Prof. Alessandro Fedrizzi

Scientific advisor

Bio

Alessandro Fedrizzi has a 20 year track record in the development of photonic quantum technologies for foundational research and applications in quantum computing, communication and sensing. Completing his PhD in 2008 under the supervision of 2022 Nobel Laureate Anton Zeilinger, he then spent 7 years—including three on an ARC Discovery Early Career Award— as a research fellow at the University of Queensland, Australia. He joined Heriot-Watt University Edinburgh in 2015, where he is now a professor at the Institute of Photonics & Quantum Sciences leading the Edinburgh Mostly Quantum Laboratory. Alessandro’s primary research interests are in the engineering of advanced quantum light sources for quantum networking and satellite quantum communication. He has held the EPSRC Early Career Quantum Technology Fellowship, is an assistant director of the Integrated Quantum Networks Hub (IQN) and a co-director of the EPSRC Doctoral Training Centre in Applied Quantum Technologies

Anne Johnson

Anne Johnson

Commercial advisor

Bio

Anne Johnson, a former Cisco Systems leader, brings over 30 years of experience in deep tech as an operator and investor, working with major Silicon Valley companies, startups, and scaleups.

Where can Intertangle be used?

Research & Development

State-of-the-art equipment for testbeds and quantum information protocol demonstrations, with a modular, readily customisable architecture. Built to help you explore potential use cases and scope new services and products.

Academic Research & Teaching

Reliable and compact entanglement-based tools that can be easily integrated and adapted into cutting-edge academic research and teaching modalities

Telecommunications

Entanglement distribution for next-generation quantum communication systems, with the noise and loss tolerance to run over deployed telecom infrastructure. No specialist team required to run them.

Quantum Networking Industry

Entanglement links to support future interconnected quantum devices, extending sensing capabilities and allowing for distributed computing.

Finance

Entanglement gives two parties shared randomness they can turn into cryptographic material, helping secure financial transactions and support reputational risk management.

Defence

Highly secure communication channels for military and government agencies, plus entanglement-based sensing for precision timing and navigation.

Energy & Utilities

Entanglement is inherently sensitive to interference: any attempt to tap or tamper with the link leaves a detectable trace, adding a layer of security cyber-only tools can’t reach. Entanglement-based sensing could also support precision timing for synchronising distributed infrastructure.

We would love to speak to you!

If you are developing quantum technologies, are looking at integrating quantum systems to boost the performance of your current applications, or want to learn more about our entanglement platform, please get in touch!

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Contact Us

Have a query?

Interested in what Intertangle could do for you? Please get in touch!

Email:
naherrerav@intertangle.co.uk

Address
Institute of Photonics and Quantum Sciences
Herriot-Watt University
EH14 4AS, Edinburgh, UK