Rolf Landauer

Chronicled events

1. April 1994​·​A Quantum Computer Could Break the Codes
   #5902

   A quantum computer could never run long enough. Its quantities vary continuously, like those of an old analog computer, so small errors pile up and can’t be corrected the way a classical computer corrects a slipped bit: you can’t even look at a quantum state to check it without disturbing it.