State tomography of a qubit through scattering of a probe qubit

Antonella De Pasquale, Kazuya Yuasa, Hiromichi Nakazato

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number052111
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume80
Issue number5
DOIs
Publication statusPublished - 2009 Nov 18

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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