PhD Defense: Muhammad Rizwan Sami's Research on Attosecond Pulses Muhammad Rizwan Sami on Tuesday defended his PhD thesis on the "Effect of Atomic Nucleus on Generation of Attosecond Pulses" at the Institute of Physics, Government College University Lahore. His research was supervised by Dr. Atif Shahbaz. Vice Chancellor of GCU, Professor Dr. Shazia Bashir, attended PhD defense and praised the research for its potential impact on the field of quantum physics. She highlighted that the findings co