| 研究課題/領域番号 |
21F21015
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| 配分区分 | 補助金 |
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| 研究機関 | 東京大学 |
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研究代表者 |
村尾 美緒 東京大学, 大学院理学系研究科(理学部), 教授 (30322671)
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| 研究分担者 |
REGULA BARTOSZ 東京大学, 理学(系)研究科(研究院), 外国人特別研究員
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| 研究期間 (年度) |
2021-07-28 – 2024-03-31
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| キーワード | Quantum resources / Quantum entanglement / Quantum thermodynamics / Hypothesis testing |
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| 研究実績の概要 |
During the second phase, we focused on three tasks: (1) extending developments started in the first year, in particular the study of probabilistic transformations of quantum resources; (2) exploring new questions in the discrimination of quantum states and channels; (3) studying the asymptotic properties of quantum entanglement.
With regards to point (1), this led to a new publication and an invited talk presentation at the Workshop on Quantum Information, Computation, and Foundations 2022 organized by Kyoto University.
Point (2) led to several papers which are now undergoing review.
Point (3) has led to two major publications, one which revealed significant differences between the theories of quantum entanglement and thermodynamics, and one which extended these ideas to quantum channels.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
Our results on the characterisation of quantum entanglement have been published in the high-impact journal Nature Physics, presented at several international conferences, and featured in scientific press, showing the significance of our findings in this direction.
We have also been able to develop a novel approach to quantum hypothesis testing assisted by postselection, which goes beyond previously studied techniques and has potential to lead to new insights in the characterization of quantum state discrimination.
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| 今後の研究の推進方策 |
The final part of the project will aim to extend more of our methods and results developed for quantum states, so that they can also be applied to quantum processes (quantum channels and more general higher-order quantum transformations). This will in particular concern the question of discrimination and hypothesis testing of quantum channels, where there are promising avenues to generalise previous techniques to shed new light onto the fundamental questions of how well two (or more) quantum processes can be distinguished.
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