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researcher

Koichi Yamagata

16 papers hereh-index 6206 citations22 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author7
  • first author1
  • middle author4
  • last author4

Across the 16 of 16 papers where every author was matched, so the position is known.

fields
  • quant-ph14
  • math.OA1
  • math-ph1

identity via Semantic Scholar / OpenAlex

activity
20102026
most citedQuantum local asymptotic normality based on a new quantum likelihood ratio

117 citations · 207 across the 16 of their papers we have counts for

collaborators
Showing 2012Show all

2 papers · 1 filter

quant-ph2012★ 74 cited

Experimental Demonstration of Adaptive Quantum State Estimation

Ryo Okamoto, Minako Iefuji, Satoshi Oyama +4

The first experimental demonstration of an adaptive quantum state estimation (AQSE) is reported. The strong consistency and asymptotic efficiency of AQSE have been mathematically p…

quant-ph2012★ 117 cited

Quantum local asymptotic normality based on a new quantum likelihood ratio

Koichi Yamagata, Akio Fujiwara, Richard D. Gill

We develop a theory of local asymptotic normality in the quantum domain based on a novel quantum analogue of the log-likelihood ratio. This formulation is applicable to any quantum…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.