TY - JOUR
AU - Avila Aoki, Manuel
PY - 2020
TI - One-qubit purity in terms of the discrete Wigner transform
JF - CIENCIA ergo-sum; Vol. 27 Núm. 1 (2020): CIENCIA ergo-sum (marzo-junio 2020)
DO - 10.30878/ces.v27n1a9
KW -
N2 - An explanation and an illustration of the meaning of a discrete phase-space is given. The class of a discrete Wigner transform (DWT) for the specific case of a one-qubit state is introduced. We derive the one-qubit state formalism around its formulation in terms of the DWT in detail. A novel structure of a one-qubit purity in terms of the DWT is introduced. We find a criterion for stating when a one-qubit state is either mixed or pure .
UR - https://cienciaergosum.uaemex.mx/article/view/11278