Nanoelectronics and photonics
The last decade has witnessed unprecedented developments in the fabrication of nanoelectronic and nanophotonic devices and microlasers based upon quantum electronic and quantum optical effects which have no classical analogue. The combination of these properties opens up a new territory in fundamental science.
Our research lays the theoretical foundations for the cooperative interplay of electrons and photons in quantum conductors, quantum dots, mesoscopic and superconducting circuits, and micro-cavity lasers. This brings together concepts of mesoscopic physics, quantum optics, quantum dynamics, and electronic correlations.
Schematic diagram of a nanometer-sized constriction in a quantum-mechanical conductor (bottom) and the energy range of electronic states (top), showing excitations of electrons (black dots) and holes (white dots) when a voltage V is applied. Electronic transitions (arrows) can be used to generate photons (of frequency ω) with non-classical properties.
Radiation pattern of an annular dielectric microresonator