Too Long; Didn't Read
White House budget calls for increase in annual spending on quantum computing (QC) to reach $860 million within two years. India declared that they'll be investing more than a billion dollars in quantum computing. Despite significant progress, building quantum computers powerful enough to solve real-world problems remains one of the most difficult tasks in today’s technology frontier. What makes it so difficult to build a reliable and scalable quantum computer and what are the key challenges we need to overcome to make it a reality?