How does a quantum computer differ from a classical computer? What are the obstacles that must be overcome in quantum computing? In Flynn’s taxonomy: a) What does SIMD stand for? Give a brief...

How does a quantum computer differ from a classical computer? What are the obstacles that must be overcome in quantum computing? In Flynn’s taxonomy: a) What does SIMD stand for? Give a brief description and an example. b) What does MIMD stand for? Give a brief description and an example.