Contents

# Contents

## Idea

A quantum state in a 2-dimensional Hilbert space of states.

## Properties

### In terms of geometric quantization

In geometric quantization qbits are naturally understood as the states given by the geometric quantization of the 2-sphere for prequantum line bundle (plus metaplectic correction) being of unit first Chern class. See at geometric quantization of the 2-sphere – The space of quantum states.

## References

The term q-bit goes back to

and was popularized by early adoption such as in