On Quantitative Determination of the Degree of Independence of Qubit Transformation by a Quantum Gate or Channel

Faleeva, M. P., Popov, I. Y. & Žežula, I., 1-May-2018, In : Optics and Spectroscopy (English translation of Optika i Spektroskopiya). 124, 5, p. 720-725 6 p.

Research output: Contribution to journalArticleAcademicpeer-review

A multiqubit channel (quantum gate) is considered. A procedure of calculating the distance from the quantum-gate matrix to the subspace of matrices, which are tensor products of the transformation matrices of qubit subsystems, is proposed. The value of this distance indicates the degree of independence of transformation of these qubit subsystems. The proposed approach is considered as applied to waveguide implementation of quantum bits.

Original languageEnglish
Pages (from-to)720-725
Number of pages6
JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
Issue number5
Publication statusPublished - 1-May-2018
Externally publishedYes

ID: 64161934