# Clarification on what we can consider a qubit to be

• I
In a 2 level quantum system, should I consider the states

$$|0>$$

and

$$|1|>$$

to be qubits by themselves?

Or is only the SUPERPOSITION of these two states,

$$\alpha |0> + \beta |1>$$

considered to be a qubit?

## Answers and Replies

Nevermind, they have to be qubits as well. If we consider our superposition to be a qubit, then we can set ## \alpha = 1 ## and ## \beta = 0 ## and that should be an appropriate qubit state.

A. Neumaier