Scalable Quantum Logic using Microfabricated Ion Traps: Visiting Researcher Funding

使用微加工离子阱的可扩展量子逻辑：访问研究人员资助

• 批准号: EP/I028978/1
• 负责人: David Lucas
• 金额: $ 9万
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2011
• 资助国家: 英国
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FI028978%2F1
• 关键词: Scalable; Quantum; Logic; using; Microfabricated

A quantum computer is a device that stores and manipulates information according to the laws of quantum mechanics, the physical theory that describes the physical world at the scale of atoms and smaller. If it could be built, it would be exponentially more powerful than today's normal classical computers, and would revolutionize fields such as cryptography. It could also simulate other quantum systems much more efficiently than classical computers can, which could ultimately help understand the structure of large molecules and impact areas such as molecular analysis and design. While theoretically well-understood, the technical challenges of building such a machine are enormous, and at the limits of today's technology. One of the most advanced technologies for building a quantum computer are ion traps, where individual (charged) atoms held in electrostatic traps in high vacuum are used to store quantum information. The focus of this project is to develop methods to scale up an ion trap computer from the current state of the art (a few atoms) to many atoms. This will be achieved through the fabrication of a surface electrode ion trap (easier to scale to deal with large numbers of ions than other designs), which includes microwave transmission lines. The microwaves will be used to implement quantum logic gates between pairs of ions, the essential resource for manipulating quantum information.

量子计算机是一种根据量子力学定律存储和操纵信息的设备，量子力学是一种以原子或更小尺度描述物理世界的物理理论。如果它能够建成，它将比当今普通的经典计算机强大得多，并将彻底改变密码学等领域。它还可以比经典计算机更有效地模拟其他量子系统，这最终可以帮助理解大分子的结构并影响分子分析和设计等领域。虽然理论上很好理解，但建造这样一台机器的技术挑战是巨大的，并且处于当今技术的极限。构建量子计算机最先进的技术之一是离子陷阱，其中高真空中的静电陷阱中的单个（带电）原子用于存储量子信息。该项目的重点是开发将离子阱计算机从当前技术水平（几个原子）扩展到许多原子的方法。这将通过制造表面电极离子阱（比其他设计更容易扩展以处理大量离子）来实现，其中包括微波传输线。微波将用于实现离子对之间的量子逻辑门，这是操纵量子信息的重要资源。

项目成果

Reduction of heating rate in a microfabricated ion trap by pulsed-laser cleaning

• DOI: 10.1088/1367-2630/13/12/123023
• 发表时间: 2011-10
• 期刊: New Journal of Physics
• 影响因子: 3.3
• 作者: D. Allcock;L. Guidoni;L. Guidoni;T. Harty;C. Ballance;M. Blain;A. Steane;D. Lucas

Fast quantum logic gates with trapped-ion qubits

• DOI: 10.1038/nature25737
• 发表时间: 2018-03-01
• 期刊: NATURE
• 影响因子: 64.8
• 作者: Schafer, V. M.;Ballance, C. J.;Lucas, D. M.
• 通讯作者: Lucas, D. M.