Abstract
| Language | English |
|---|---|
| Article number | 012315 |
| Number of pages | 10 |
| Journal | Physical Review A |
| Volume | 65 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 12 Dec 2001 |
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Keywords
- symmetric qubit sets
- detection strategies
- photons
- von Neumann
- optical physics
- optics
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Optimum detection for extracting maximum information from symmetric qubit sets. / Mizuno, Jun; Fujiwara, Mikio; Akiba, Makoto; Kawanishi, Tetsuya; Barnett, Stephen M.; Sasaki, Masahide.
In: Physical Review A, Vol. 65, No. 1, 012315, 12.12.2001.Research output: Contribution to journal › Article
TY - JOUR
T1 - Optimum detection for extracting maximum information from symmetric qubit sets
AU - Mizuno, Jun
AU - Fujiwara, Mikio
AU - Akiba, Makoto
AU - Kawanishi, Tetsuya
AU - Barnett, Stephen M.
AU - Sasaki, Masahide
PY - 2001/12/12
Y1 - 2001/12/12
N2 - 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.
AB - 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.
KW - symmetric qubit sets
KW - detection strategies
KW - photons
KW - von Neumann
KW - optical physics
KW - optics
UR - http://arxiv.org/PS_cache/quant-ph/pdf/0106/0106164v2.pdf
U2 - 10.1103/PhysRevA.65.012315
DO - 10.1103/PhysRevA.65.012315
M3 - Article
VL - 65
JO - Physical Review A - Atomic, Molecular, and Optical Physics
T2 - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 1
M1 - 012315
ER -