Theory

We investigate the fundamental principles of quantum information processing and complex quantum many-body systems. Using methods from mathematical physics, quantum information theory and computational science, we seek a deeper understanding of quantum phenomena while addressing the fundamental challenges underlying emerging quantum technologies. Our research spans quantum computing, quantum error correction, quantum algorithms, quantum communication and the study of strongly correlated quantum matter.

Département Communications, Images et Traitement de l'Information (CITI) is a research group located at Télécom SudParis, Institut Polytechnique de Paris. It specialises in various aspects of information processing (such as classical and quantum information and communication theory, signal and data processing, and machine learning), as well as applied mathematics.

Welcome to the Quantum Simulation and Computation Group at University of Portsmouth!

We are interested in a wide range of topics in quantum information and quantum computing connected to understanding the power and limitations of near-term quantum devices. As a major tool, we are using random quantum circuits to better understand the generic expressitivity of short quantum circuits.
Research focus:
- random unitaries and designs
- quantum learning theory
- quantum computing resources
- benchmarking and characterization
- classical simulation

Many-body light-matter systems are hybrid open quantum systems exhibiting both strongly correlated behaviors of matter and (in)coherent features of photons. They have emerged as a novel platform for studying nonequilibrium many-body quantum dynamics as well as for implementing new quantum technologies.

• Theory of quantum computing, energy based models
• Tensor networks, graphical reasoning in physics and computing
• Quantum mathematical methods

Our group was established at Lund University, Sweden, in 2023. The research is broadly within the field of quantum information theory and the foundations of quantum mechanics.

Typical focus points are entanglement, nonlocality, prepare-and-measure scenarios, quantum cryptography, quantum measurements, certification of quantum devices, semidefinite programming techniques and fundamental concepts of classical vs quantum.

Our group is part of the John Hopcroft Center for Computer Science at Shanghai Jiao Tong University. We focus on quantum information, which lies at the intersection of quantum physics and computer science, with a particular emphasis on applying artificial intelligence to quantum information science.