Quantum technologies hold the promise of superior performance when compared to their classical counterparts. In many scenarios, some sort of interface is employed between light, the natural candidate of quantum information carrier and matter, as support for storing and processing quantum states (such as in quantum computers or quantum simulators).
A crucial detrimental aspect in any system involving electronic excited and ground states, is that the inherent exposure to the infinite number of external quantum electromagnetic modes leads to energy loss and decoherence.
Open system dynamics is an ideally suited tool to deal with the loss of energy and coherence in systems where the contact with radiative or non-radiative baths is unavoidable. Quantum optics has a reach toolbox of techniques and methods that accurately describe such systems.
In this research area we focus on describing detrimental effects (by finding fully analytical solution) but also circumventing them by engineering the design of the interactions. The directions are roughly divided as
- Open system dynamics – fully analytical approach, Dicke superradiance models
- Collective response of quantum emitter arrays
- Quantum cavity electrodynamics with emitter arrays