Qudit quantum-state tomography

Thew, R., Nemoto, K., White, A. G. and Munro, W.J. (2002) Qudit quantum-state tomography. Physical Review A, 66 1: 012303-1-012303-5. doi:10.1103/PhysRevA.66.012303

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Author Thew, R.
Nemoto, K.
White, A. G.
Munro, W.J.
Title Qudit quantum-state tomography
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2002
Sub-type Article (original research)
DOI 10.1103/PhysRevA.66.012303
Open Access Status File (Publisher version)
Volume 66
Issue 1
Start page 012303-1
End page 012303-5
Total pages 5
Editor B. Crasemann
Place of publication United States
Publisher Americal Physical Society
Collection year 2002
Language eng
Subject C1
240402 Quantum Optics and Lasers
780102 Physical sciences
Abstract Recently quantum tomography has been proposed as a fundamental tool for prototyping a few qubit quantum device. It allows the complete reconstruction of the state produced from a given input into the device. From this reconstructed density matrix, relevant quantum information quantities such as the degree of entanglement and entropy can be calculated. Generally, orthogonal measurements have been discussed for this tomographic reconstruction. In this paper, we extend the tomographic reconstruction technique to two new regimes. First, we show how nonorthogonal measurements allow the reconstruction of the state of the system provided the measurements span the Hilbert space. We then detail how quantum-state tomography can be performed for multiqudits with a specific example illustrating how to achieve this in one- and two-qutrit systems.
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 110 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 14 Aug 2007, 17:52:55 EST