1. His research centres on the areas of quantum optics and quantum information. 2. His theorem proves the equivalence of classical wave optics to quantum optics . 3. He researches in quantum optics , quantum information science and fundamental quantum science. 4. Quantum optics deals with the application of quantum mechanics to optical systems.5. This is called the Hong Ou Mandel effect in quantum optics . 6. In the study of these devices, quantum optics often overlaps with quantum electronics. 7. Quantum optics is a very lively field of current physics research.8. In retrospect, the prize was mainly awarded for significant contributions in quantum optics . 9. The squeeze operator is ubiquitous in quantum optics and can operate on any state. 10. It is a cross field of optics, quantum optics , solid-state physics and materials science.