Moreover, light and matter are genuine quantum fields in Nature. The theory of the space-time geometry of quantum dielectric may serve as a guiding line for understanding the effects of slow light on matter waves. Here one can conceive of creating light fields that appear to atoms as quasi-astronomical objects. The holy grail in this research area would be the creation of a black hole made of light. We have just completed an extension from orthodox selfadjoint operators to maximal symmetric operators for describing observables.
Research is in progress on quantum states, quantum paradoxes and nonlocality problems.
Theories on reducing quantum measurements to local position measurements, on asymptotic superselection rules and models of local position measurements are being formulated. Wan Macroscopic quantum systems and quantum circuits are important for a deeper understanding of the diversity of quantum systems as well as for physical applications and understanding of quantum devices. Systems under investigation include traditional superconducting systems and the recently observed Bose-Einstein condensate of dilute atomic vapour. This study has already shed new light on the fundamental problem on classical and quantum divide. The general quantisation problem in quantum mechanics is investigated with geometric quantisation techniques.