, April 17 (Reuters) - Quantum computers promise to be millions of times faster than today's fastest supercomputers, potentially revolutionizing everything from medical research to the way people solve problems of climate change. Lacking quantum computers that customers can use today to get an advantage over classical computers, these startups are developing a new breed of software inspired by algorithms used in quantum physics, a branch of science that studies the fundamental building blocks of nature. Still, he said companies that start using them will have engineers "learning about quantum and the phenomenon and the process, which will better prepare them to use quantum computers at the point that they do so