Here's the list of all physics faculties in Polish universities:
wiw.pl/szkoly/studia.asp?id1=5&id2=5
(use translator)
It seems that the best physics department have the Warsaw University:
Physics Department of Warsaw University among the top 150 in the world in the present QS 2014 TopUniversities
In the fourth edition of the QS World University Rankings by Subject, for the direction of Physics and Astronomy, Department of Physics of Warsaw University took place in the range of 101-150 - and as the only Department of Physics in Poland was ranked among the 200 best universities in the world.
fuw.edu.pl/aktualnosci-all/news2615.html