Universal Continuous Variable Quantum Computation Without Cooling

Hoi-Kwan Lau · Martin B. Plenio · 2017 · Physical Review A 95, 022303

| 编号 QCV033 | 主题 连续变量与玻色子算术 | 链接 arXiv:1608.03213 |

摘要

摘要保留原文（英文）

摘要取自 arXiv / 出版方元数据，未作翻译，以保证与原文一致。

One of the limitations to the quantum computing capability of a continuous-variable system is determined by our ability to cool it to the ground state, because pure logical states, in which we accurately encode quantum information, are conventionally pure physical states that are constructed from the ground state. In this work, we present an alternative quantum computing formalism that encodes logical quantum information in mixed physical states. We introduce a class of mixed-state protocols that are based on a parity encoding, and propose an implementation of the universal logic gates by using realistic hybrid interactions. When comparing with the conventional pure-state protocols, our formalism could relax the necessity of, and hence the systemic requirements of cooling. Additionally, the mixed-state protocols are inherently resilient to a wider class of noise processes, and reduce the fundamental energy consumption in initialisation. Our work broadens the candidates of continuous-variable quantum computers.

本站词条在引用该文献时，会以 wikilink（sources/QCV033）链接到本页；右侧「反向链接」面板自动列出所有引用它的词条。