The objective of the PhoQuS@UW Support Action funded through the Regional Potential scheme of the 7th Framework Programme is to establish the Faculty of Physics, University of Warsaw (UW) as a multidisciplinary centre of excellence in Photonics and Quantum Science (PhoQuS). Photonics and Quantum Science are transforming 21st century science and engineering through delivering scientific and technological breakthroughs in areas as diverse as telecommunication, biomedical diagnostics, energy sources and environmental monitoring, as well as advancing our understanding of nature by reaching extreme scales of size, time and intensity in light-matter interactions and exploring subtle quantum aspects of the microworld. UW is uniquely positioned to become one of European leaders in this rapidly developing field through exploiting its traditional excellence in theoretical and experimental physics to stimulate innovation-driven research assisted by recent major infrastructure upgrades co-financed from the European Regional Development Fund. PhoQuS@UW will help to unlock this potential with a set of coherent measures. Sustainable cooperation with twelve leading European research institutions in the PhoQuS area will be eastablished by partner visits and secondments of UW staff. Experienced researchers in most promising fields such as biomedical optics, attoscience, environmental optics, quantum optics, and quantum metrology will be recruited to strengthen the human capital. Available infrastructure will be augmented by purchases of additional equipment to create new opportunities for experimental research. Innovation-stimulating mechanisms will be implemented in close collaboration with regional industrial stakeholders. A number of scientific conferences, workshops, and symposia will be organized to share state-of-the-art knowledge. All these activities will be complemented by events designed to raise public awareness of research and to encourage science and engineering careers.