2013 Fiscal Year Final Research Report
Distributed quantum information processing via multi-resource networks
| Project/Area Number |
23540463
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
MURAO Mio 東京大学, 理学(系)研究科(研究院), 准教授 (30322671)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 分散型量子情報処理 / 量子計算 / 量子通信 / エンタングルメント / ネットワーク符号化 / 測定ベース量子計算 / 因果関係 / 計算の並列化 |
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| Research Abstract |
We characterized distributed quantum information processing in terms of nonlocality, complexity, causality and parallelizability. We developed a formulation for the network coding of quantum computation to efficiently perform multi-party distributed quantum computation that simultaneously implements quantum computation and communication. We analyzed the amount of nonlocal resource necessary to perform two-party distributed quantum computation. We proposed a method to perform measurement-base quantum computation using symmetry-breaking thermal states of a many-body system exhibiting a quantum phase transition. We analyzed a parallelizing mechanism and entanglement of measurement based quantum computation in terms of causal order relations. We also proposed a method to generate approximate random states using only diagonal quantum gates and analyzed nonlocal complexity of the method.
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