SAN FRANCISCO :John M. Martinis, one of this year's winners of the Nobel Prize in physics for breakthroughs in quantum computing, on Monday formed an alliance with HPE and several chip firms to create a practical, mass-producible quantum supercomputer.  Quantum computers hold the promise of solving problems in chemistry, medicine and other fields that would take classical computers thousands of years.  Major tech firms such as IBM, Microsoft and Alphabet's Google, where Martinis worked before