Hi, I am an undergraduate student from India. Pursuing double major in Physics and Mechanical Engineering. I have completed 4 semesters(2 years) of my college. I had taken a class titled "Quantum information and computing" and it interested me a lot. I really love math and computations involved. I am getting interested in theory and algorithms aspect of quantum computing. My question is, how hard will it be to pursue quantum computing as my field for a grad school (maybe for a PhD), given that I will be doing irrelevant Mechanical Engineering courses. I cannot take any math or CS classes simply because I wont be having slots which will make me complete my degrees on time (I am planning to complete my classes in 4years and 1 year of thesis). I understand that I need to relevant math/CS courses, but I will be practically restricted. However, I can put efforts and study relevant non-physics things on my own. Another question I want to ask is, how do I proceed with these conditions? I cannot change my second major to CS, but I can drop Mechanical Engineering and pursue 5 classes as my open elective. Also, any suggestions on what text/ lectures to follow in order to understand the stuff better. Right now, I am following Nielsen and Chuang, and doing well with it. Thank you in advance!