nLab qbit




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


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.


The term q-bit goes back to

and was popularized by early adoption such as in

See also:

Laboratoy-realizations of qbits for use in quantum computers:

Last revised on June 17, 2022 at 07:59:01. See the history of this page for a list of all contributions to it.