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Distributed Hybrid Quantum Computing
https://ir.soken.ac.jp/records/876
https://ir.soken.ac.jp/records/876cbd651bd-05fe-4644-a1b9-922fbfd7681d
| 名前 / ファイル | ライセンス | アクション |
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要旨・審査要旨 (293.5 kB)
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本文 (2.2 MB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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| 公開日 | 2010-02-22 | |||||
| タイトル | ||||||
| タイトル | Distributed Hybrid Quantum Computing | |||||
| タイトル | ||||||
| タイトル | Distributed Hybrid Quantum Computing | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_46ec | |||||
| 資源タイプ | thesis | |||||
| 著者名 |
LOUIS, Sebastien Gerald Roland
× LOUIS, Sebastien Gerald Roland |
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| フリガナ |
セバスチャン, ルイス
× セバスチャン, ルイス |
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| 著者 |
LOUIS, Sebastien Gerald Roland
× LOUIS, Sebastien Gerald Roland |
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| 学位授与機関 | ||||||
| 学位授与機関名 | 総合研究大学院大学 | |||||
| 学位名 | ||||||
| 学位名 | 博士（情報学） | |||||
| 学位記番号 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 総研大甲第1201号 | |||||
| 研究科 | ||||||
| 値 | 複合科学研究科 | |||||
| 専攻 | ||||||
| 値 | 17 情報学専攻 | |||||
| 学位授与年月日 | ||||||
| 学位授与年月日 | 2008-09-30 | |||||
| 学位授与年度 | ||||||
| 値 | 2008 | |||||
| 要旨 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | There are numerous proposals for the physical realization of a quantum<br />computer. However, distributed approaches, making use both of flying and<br />stationary qubits, seem to constitute the most promising route towards a<br />truly scalable device. Such systems guarantee extendibility, they incorpo-<br />rate the interface with communication applications and relax the physical<br />realization of the device, allowing for defect tolerance. Flying qubits are<br />included in the more general concept of a quantum bus, a mediating sys-<br />tem which can be of higher dimension. Such a quantum bus can be used<br />in the straightforward preparation of a standard multi-qubit resource en-<br />abling measurement based quantum computation, the cluster state. This<br />constitutes the framework for the results presented in this thesis.<br /> We begin by investigating the effects of dissipation in the continuous<br />variable bus scheme known as the qubus scheme. By considering loss in the<br />bus as it mediates interactions between the stationary qubits, we obtain an-<br/>alytical results for the effective action of the induced quantum gate. We find<br />that a particular two-qubit gate operates with high fidelity in the presence<br />of moderate loss and give a simple iteration scheme to simplify the effects<br />of loss on the qubits. We then attempt to reduce these effects by preparing<br />the bus in more elaborate state, however no improvements are observed.<br /> We then apply the qubus scheme to the probabilistic generation of cluster<br />states and develop an entangling gate working with high success probability.<br />This allows us to produce cluster states far more efficiently than other pro-<br />posals. Investigating new methods to analyze the performance of different<br />generation strategies constitutes the second part of this set of results. We<br />begin by making the large flow approximation, used in queuing theory, to<br />obtain the optimal strategy in a regime with large resources. After what<br />we take the other more familiar limit of single cluster growth and introduce<br />absorbing Markov chains as a key mathematical tool.<br /> Finally we look at the transmission of composite quantum systems via a<br />single higher dimensional bus. We provide generalized protocols and inter-<br />actions guaranteeing a full transfer of the information from one composite<br />system to another. These protocols can also serve information process-<br />ing tasks, as useful logical operations can be applied to the data as it is<br />transfered. We notice lastly that the qubus scheme constitutes a potential<br />physical realization. | |||||
| 所蔵 | ||||||
| 値 | 無 | |||||
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| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
