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A minimal set of measurements for qudit-state tomography based on unambiguous discrimination
- Authors
- Ha, Donghoon; Kwon, Younghun
- Issue Date
- Sep-2018
- Publisher
- Kluwer Academic Publishers
- Keywords
- Quantum-state tomography; Unambiguous discrimination; Measurement
- Citation
- Quantum Information Processing, v.17, no.9, pp 1 - 19
- Pages
- 19
- Indexed
- SCIE
SCOPUS
- Journal Title
- Quantum Information Processing
- Volume
- 17
- Number
- 9
- Start Page
- 1
- End Page
- 19
- ISSN
- 1570-0755
1573-1332
- Abstract
- Quantum-state tomography (QST) is a fundamental task for reconstructing unknown quantum state from statistics of measurements. We propose a qudit-state tomography based on unambiguous discrimination (UD) of d linearly independent pure states. We then prove that our proposal for QST provides a minimal set of measurements. Our proposal can be used in any finite dimension, and our strategy can be realized by a projective measurement on a system combined with a d-dimensional auxiliary system. In addition, we present another method to improve previously known UD QST of pure quantum state.
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Related Researcher
- Kwon, Young hun
- ERICA 첨단융합대학 (ERICA 지능정보양자공학전공)