Quantum Computing is well equipped to determine the number of angels that can dance on the head of a pin.  After 25-years of efforts and many many millions of dollars.  Not even a simple quantum computer capable of performing any real calculation has been produced.  Quantum Computing is an example of today's science or the depths that it has plunged absent truly innovative thought.  Note the age old appeal to competition between countries.  We have a quantum computing gap, send more government dollars.  Truthfully, there are very fundamental reasons why quantum computers as currently envisioned are non-viable but the science workers involved have no viable ideas to work on instead.  This, sadly, is the direction of American science.  It should be noted that the reason quantum computing was funded initially by the NSA (National Security Agency) was for military applications such as breaking codes.  Code breaking is touted QC's best selling point, i.e. spying.