Research
My research interests has mainly related to quantum random number generation, long-distance quantum communication over optical fiber, and the engineering of photonic quantum information experiments. My more recent work focuses on quantum communication in the broader context, lifting the perspective from can we do quantum key distribution? to what are the practical challenges and opportunities for quantum communication?.
As quantum communication technologies mature, we are shifting from very tangible QKD demonstrators to more complex and nuanced questions about how quantum communication can be integrated into real-world networks, how it can be made robust and secure against a wider range of threats, and what new applications it can enable. My research is focused on these broader questions, with an emphasis on experimental work and engineering of photonic quantum information systems.
Themes
Below are some of the themes that are central to my research, roughly in order of how recently I've been working on them. It's by no means an exhaustive list of my research, but it gives a flavor of the topics I've been most focused on in recent years.Quantum networking
- Integration of quantum communication with classical networks
- Coexistence of quantum and classical signals in fiber
- Quantum buffers and routing of quantum information with classical headers
Quantum communication over fiber
- Propagation and stability of quantum states in deployed optical fiber
- High-dimensional quantum communication over fiber (spatial modes, multiplexing)
- Interferometric visibility and polarization stability in long links
Quantum random number generation
- Measurement-device independent quantum random number generation
- Alternative light sources for quantum randomness
- Certification, randomness extraction, and high-speed post-processing
Scientific collaborators
Selected collaborators across institutions and projects.
- Mohamed Bourennane - Stockholm University (topic: quantum communication, entanglement sources)
- Feng Gao - Department of Physics, Chemistry and Biology, Linköping University (topic: perovskite LEDs for quantum communication)
- Rui Lin - Chalmers University of Technology (topic: classical-quantum coexistence)
- Anubhav Chaturvedi - Gdansk University of Technology (topic: certification of quantum measurements)
- Gustavo Lima - University of Concepción (topic: certification of quantum measurements, quantum communication)
- Guilherme Temporão - Pontificial University of Rio de Janeiro (topic: long-distance quantum communication)
Notable projects
A few representative efforts where I've contributed experimentally and/or on the engineering side.
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Long-distance quantum communication over deployed fiber
Building and characterizing fiber-based links, analysis of stability/visibility and background noise in long-distance links. Key management and telemetry for long-term operation. Analysis of telemetry and predictability of link performance. -
Certified quantum randomness with alternative light sources
Implementations and security analysis of MDI-style QRNG protocols, high-rate acquisition and post-processing. -
High-dimensional photonic states over fiber
Generation of path-encoded qutrits and the implementation of a RDI-style protocol for quantum randomness generation.
Funding and grants
Selected funded activities and awards:
- Deep Learning-based RF side channel detection in commercial quantum key distribution systems (NAISS 2026/4-341) - PI, 2026-2027. Supercomputer grant (500 GPUh/month) for deep learning of RF signatures.
- Market verification grant, LEAD - PI, 2025-2025. Salary for 3 months for 2 consultants doing market verification for QKD-compatible real-time multimedia encoding.
- Board for School Collaboration, Linköping University - PI, 2025-2025. Equipment funds for hosting a high-school final project.
For publications and talks, see Publications.
For appointments, education, teaching, service, languages and skills, see CV.