Quantum optics and spin physics with solid-state defect centres

具有固态缺陷中心的量子光学和自旋物理

• 批准号: 435554-2013
• 负责人: Childress, Lilian
• 金额: $ 2.33万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=552802
• 关键词: Quantum; optics; spin; physics; solid

The tiny magnetic moments of electrons or nuclei - spins - offer a physical system that can behave quantum mechanically over extraordinarily long timescales; in some cases they can exhibit coherent evolution for seconds, minutes, or even hours. If information is encoded into the state of such spins, their long-lived coherence can become a resource for future computing or cryptography systems whose computational power or information security is fundamentally based on the laws of quantum mechanics. At the same time, the quantum states of spins can be exquisitely sensitive probes of their surroundings, creating opportunities to study the nature of their local environment or measure external electromagnetic fields with high precision. To realize spin-based quantum devices, one must find ways to control spins, prepare and detect their states, and engineer interactions between them without sacrificing their coherent quantum character.

电子或原子核的微小磁矩--自旋--提供了一个物理系统，可以在非常长的时间尺度上表现出量子力学行为;在某些情况下，它们可以在几秒钟、几分钟甚至几小时内表现出连贯的演化。如果信息被编码到这种自旋的状态中，它们的长期相干性可以成为未来计算或密码系统的资源，这些系统的计算能力或信息安全性基本上是基于量子力学定律的。与此同时，自旋的量子态可以作为其周围环境的灵敏探针，为研究其局部环境的性质或高精度测量外部电磁场创造了机会。为了实现基于自旋的量子设备，人们必须找到控制自旋、准备和检测其状态以及设计它们之间相互作用的方法，而不牺牲它们的相干量子特征。