concept rotation in category quantum computing

This is an excerpt from Manning's book Learn Quantum Computing with Python and Q# MEAP V08. Login to get full access to this book.

|+⟩ and |−⟩

We call this state the state (due to the sign between the terms). We say that the |⟩ state is a _superposition_ of |0⟩ and |1⟩. If the rotation was by a −90° (anti-clockwise), then we call the resulting state stem instead. Try writing out the rotations above using −90° to see that you get !

Figure 10.8. How pairs of reflections can make a rotation