The huge difference between a classical computer and a quantum computer is so intriguing! It is the first time that math can come back to computer science and guide its evolution. Also, the quantum algorithm is the first time it introduces the internal parallelism. Those existing algorithms barely considered parallelism when it is designed. Now the quantum can change this situation!
The following are some notes about quantum algorithms. They are not related to any language implementation, it is just pure math. The only tool I want to use is "that piece of meat between my ears". :)