State tomography of a qubit through scattering of a probe qubit

Antonella De Pasquale; Kazuya Yuasa; Hiromichi Nakazato

doi:10.1103/PhysRevA.80.052111

State tomography of a qubit through scattering of a probe qubit

Antonella De Pasquale^*, Kazuya Yuasa, Hiromichi Nakazato

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 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 language	English
Article number	052111
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	80
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.80.052111
Publication status	Published - 2009 Nov 18

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.80.052111

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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.",

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AB - 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.

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State tomography of a qubit through scattering of a probe qubit

Abstract

ASJC Scopus subject areas

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