Summary: Traditional Bits in New Clothing

This chapter has introduced three state representations which we will be using throughout the remainder of this course. This summary can serve as a quick reference guide to that notation.

• In classical computing, the “state” of a wire can be at a low or a high voltage, and these states can be represented by state vectors $\ket{V_{low}}$ and $V_{high}$. In quantum computing, we will see a similar use of states.