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## How many bits can a qubit hold?

two bits

It is possible to fully encode one bit in one qubit. However, a qubit can hold more information, e.g., up to **two bits** using superdense coding.

## How big is a qubit?

about 0.2 millimeter across

Each qubit is **about 0.2 millimeter across**, big enough to be visible through an ordinary microscope.

## Does a qubit have infinite values?

Contrary to the classical bit, a qubit can have an infinite number of values, those on the **surface** of the Bloch sphere (at least until it is measured), so: How do the availability of infinite values affect the computational power?