Hi,

To pursue bsc in quantum physics in usa you have to apply for entrance exams like- gre,tofle,etc;as these are required in english speaking countries.

Also,if you have good research work in your school level then it can be a plus point for you, through this your chances to getting admissions in some different usa universities under some good faculty members increases.

Hope this will help you out .

For more details and informations you can check out the official sites of different universities of usa too.

Good luck .