Harvard
Computer scientists at harvard go after ground breaking work and a wide range of areas including Theoretical computer science, artificial intelligence, development and the interface of economics and computer science intelligent interfaces, computer graphics, computational linguistics privacy and security , robotics, etc.
Harvard Link

Massachusetts Institute of Technology
The computer science department is the biggest department at MIT preparing students to become future leaders in their own part of the computer science or electrical engineering field. MIT has strong faculty to create the best possible education for students.
MIT Link