Theory

The "Theory of light-matter and quantum phenomena" group focuses on theoretical research on elementary and collective quantum effects, at the crossroads between light-matter physics, condensed matter, and ultra-cold quantum gases.

Research is developed in close collaboration with several national and international experimental groups, and are motivated by both fundamental and applicative challenges in quantum physics:

We investigate the connections between foundations of Quantum Physics and Computer Science, our research focuses on information storing and processing by means of quantum physical systems (e.g. photons, electrons, trapped ions, superconducting circuits). The covered research topics range from fundamental aspects of Quantum Mechanics to technological applications.

We work on the following topics:

The mission of QICI is to promote the growth of the quantum information area in Hong Kong, and to develop Hong Kong as an international research hub for quantum information and computation.

QICI has been established in November 2018 under the auspices of the HKU Department of Computer Science. Its research platform consists of 3 research teams working on quantum information theory, quantum cryptography, quantum gravity, and quantum foundations.

We are interested in quantum optics and applying its methodology in studying the collective effects of radiation and many-body systems. We have been working on non-Hermitian physics [Nat. Comm.

Our group investigates quantum many-body systems coupled to an external environment. We are interested both in fundamental questions and in quantum technological applications of open quantum systems. Our main interests are:

• Dissipative quantum state engineering
• Steady state quantum phase transitions
• Quantum simulation
• Numerical methods for open many-body systems
• Topologically ordered states of matter

The research group is led by Prof. Markus Müller.

Our research in theoretical quantum physics is mainly centred on scalable quantum computation and quantum simulation, with a focus on the development of implementations in atomic, molecular and optical (AMO) systems.