State tomography of a qubit through scattering of a probe qubit

Antonella De Pasquale*, Kazuya Yuasa, Hiromichi Nakazato

*この研究の対応する著者

研究成果: Article査読

8 被引用数 (Scopus)

抄録

We discuss the state tomography of a fixed qubit (a spin-1/2 target particle), which is in general in a mixed state, through one-dimensional scattering of a probe qubit off the target. Two strategies are presented by making use of different degrees of freedom of the probe, i.e. spin and momentum. Remarkably, the spatial degree of freedom of the probe can be utilized for optimizing the tomographic schemes.

本文言語English
論文番号052111
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
80
5
DOI
出版ステータスPublished - 2009 11 18

ASJC Scopus subject areas

  • 原子分子物理学および光学

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