is Master's in physics degree required for quantum physics studies in USA ?

We are guessing that you want to study Ph.D in Quantum Physics as you are enquiring about Master's degree. And so this answer is being written in that perspective. If it is not so, please do let us know and we shall help you with relevant information.  To be eligible for studying Ph.D  in Quantum Physics, you should have completed your Masters in Physics or Material Science. Not many Universities have Ph.D in Quantum Physics per se. Quantum Physics remains a subject in the programme outline. For example, if you consider Clark University in Worcester, USA, it offers a Ph.D in experimental and theroretical condensed matter physics and biophysics. The Programme Structure has Quantum Mechanics as one of the courses. So you need to look into that. Because Quantum Physics is used in all aspects like Nuclear Physics, Semiconductor Physics, Particle Physics, Solid State Physics,etc doing a Ph.D in any one of these specialisations also will involve learning and applying of Quantum Physics.

hi,

see in your question its not clear that in which course studies  you want to go to usa, is it masters in quantum physics or phd or ms course. please do mention of your highest qualification till now and in which course in future you want to pursue, then we may help you with your query.