Information Coding (ICG)

Quantum technology and information security.

Experiment ICG.
Photographer: Thor Balkhed

The Division of Information Coding performs research and education within quantum technology and provable information security, currently concentrated on quantum computing, quantum cryptography, and information-theoretic security. The division also holds undergraduate courses in more general information technology, cryptography, and image and video coding. The group is led by Associate Professor Guilherme B Xavier.

Research activities

Our research lab offers quantum-optical equipment that we use to conduct research into next-generation secure communication systems, also known as “quantum cryptography”, in which security is guaranteed by the quantum properties of light.

Our theoretical research concerns quantum computers, quantum algorithms, and Shannon-theoretic algorithms, how they work, as well as why quantum computers have larger computational power than standard computers.

Courses

News

Infraröd data visar en delvis bild av en person täckt av ett metallskynke.

23 March 2026

Sensors could be new witnesses in criminal investigations

Sensors in connected buildings record temperatures, movement and air quality to regulate indoor environments. However, the same data can also help reconstruct what has happened at a crime scene.

Optical instrument.

03 November 2025

Increased quantum collaboration between LiU and Singapore

Researchers at and the National Quantum Office in Singapore are now deepening their collaboration in quantum technology. The aim is to jointly achieve both scientific and industrial breakthroughs.

Presentation by Lotten Juhlin.

02 September 2025

ISY Day 2025 – sustainability in academia, industry, and society

This years theme for the ISY Day was “Sustainability in Academia, Industry, and Society”, featuring lectures, discussions, and examples of how sustainability can be integrated into research, education, and industrial development.

Research and collaborations

Staff at ICG

About the Department

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