2012年5月
Adaptive experimental design for one-qubit state estimation with finite data based on a statistical update criterion
PHYSICAL REVIEW A
- ,
- ,
- 巻
- 85
- 号
- 5
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevA.85.052107
- 出版者・発行元
- AMER PHYSICAL SOC
We consider 1-qubit mixed quantum state estimation by adaptively updating measurements according to previously obtained outcomes and measurement settings. Updates are determined by the average-variance-optimality (A-optimality) criterion, known in the classical theory of experimental design and applied here to quantum state estimation. In general, A optimization is a nonlinear minimization problem; however, we find an analytic solution for 1-qubit state estimation using projective measurements, reducing computational effort. We compare numerically the performances of two adaptive and two nonadaptive schemes for finite data sets and show that the A-optimality criterion gives more precise estimates than standard quantum tomography.
- リンク情報
-
- DOI
- https://doi.org/10.1103/PhysRevA.85.052107
- arXiv
- http://arxiv.org/abs/arXiv:1203.3391
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000303858000002&DestApp=WOS_CPL
- URL
- http://arxiv.org/abs/1203.3391v2
- ID情報
-
- DOI : 10.1103/PhysRevA.85.052107
- ISSN : 1050-2947
- ORCIDのPut Code : 111386959
- arXiv ID : arXiv:1203.3391
- Web of Science ID : WOS:000303858000002