Optimum detection for extracting maximum information from symmetric qubit sets
Mizuno, Jun and Fujiwara, Mikio and Akiba, Makoto and Kawanishi, Tetsuya and Barnett, Stephen M. and Sasaki, Masahide (2001) Optimum detection for extracting maximum information from symmetric qubit sets. Physical Review A, 65 (1). 012315. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.65.012315)
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Abstract
We demonstrate a class of optimum detection strategies for extracting the maximum information from sets of equiprobable real symmetric qubit states of a single photon. These optimum strategies have been predicted by Sasaki et al. [Phys. Rev. A 59, 3325 (1999)]. The peculiar aspect is that the detections with at least three outputs suffice for optimum extraction of information regardless of the number of signal elements. The cases of ternary (or trine), quinary, and septenary polarization signals are studied where a standard von Neumann detection (a projection onto a binary orthogonal basis) fails to access the maximum information. Our experiments demonstrate that it is possible with present technologies to attain about 96% of the theoretical limit.
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Item type: Article ID code: 5861 Dates: DateEvent12 December 2001PublishedSubjects: Science > Physics > Optics. Light Department: Faculty of Science > Physics Depositing user: Miss Darcy Spiller Date deposited: 30 Apr 2008 Last modified: 05 Sep 2024 00:40 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/5861