Atoms and light lie at the basis of most of the methods that are used to store, process and transmit quantum information, and the ideas developed in that field are now being implemented in other platforms. Additionally, with the development of new scenarios that combine different technologies, theoretical quantum optics is confronted with new challenges, and the possibility of discovering new phenomena.
Among other, the Theory Division is carrying out research in different topics, some of them in close collaboration with experimentalists:
- Quantum emitters in non-conventional baths.—When atoms or other kind of light emitters are coupled to photonic crystals they experience a wide range of phenomena, like novel ways of sub- and superradiance, effective and exotic long-range interactions, or self-organization. We develop new theoretical methods to describe those systems, and investigate some of those new phenomena.
- Quantum simulation.—We develop methods to use different systems (for instance, atoms, ions, or electrons) to emulate the physics of condensed matter or high-energy physics models. Some of those models are very hard to solve due to the exponential growth in the computational and memory resources with the number of entities involved.
- Quantum devices.—We investigate ways of building different devices to process and transmit quantum information. Those include quantum photon sources, quantum repeaters, or quantum computers. We use different setups, like trapped ions, cavity QED, or electrons in surface acoustic waves.