Fast digital oscilloscope for the development of ultrafast magnetic nano-switch with molecular superrotors

用于开发具有分子超级转子的超快磁性纳米开关的快速数字示波器

• 批准号: 472969-2015
• 负责人: Milner, Valery
• 金额: $ 10.93万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 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=564891
• 关键词: Fast; digital; oscilloscope; development; ultrafast

Major breakthroughs in our understanding of nature are often triggered by creating new exotic states of matter - objects previously inaccessible for direct laboratory studies. Antimatter or ultra-cold molecules are recent examples of such physical entities whose availability lead to significant advances of science. In the focus of this Proposal is an exotic molecular object - an ensemble of "molecular superrotors" - a gas of molecules set in synchronous directional rotation with extremely high angular frequency, tuneable across many orders of magnitude between ultraslow and ultrafast limits. Over the past few years, my research group at UBC has been developing various techniques of controlling molecular rotation with laser light. The interest in the subject stems from the fact that molecular rotation has a strong direct effect on the properties of gases. The properties of molecular superrotors are expected to be rather unique. Some of them have been recently demonstrated and studied by our group. The aim of this proposal is to observe, for the first time, and investigate magnetic properties of molecules set to ultrafast rotation by specially designed laser pulses, known as "optical centrifuge". By inducing magnetic field on a single-molecule level, we propose to develop an ultrafast switch of nano-scale magnetism. The technique will apply to a vast majority of gases, even ambient air. Being controlled by a laser beam, the magnetic switch could potentially be activated remotely, i.e. at a distance from the laser source.

我们对自然的理解的重大突破往往是由创造新的奇异物质状态引发的-这些物质以前无法直接进行实验室研究。反物质或超冷分子是这种物理实体的最新例子，它们的可用性导致了科学的重大进步。该提案的焦点是一个奇异的分子物体-一个“分子超级转子”的集合-一种以极高角频率同步定向旋转的分子气体，可在超低和超快极限之间的许多数量级上进行调谐。 在过去的几年里，我在UBC的研究小组一直在开发各种用激光控制分子旋转的技术。人们对这门学科的兴趣源于这样一个事实，即分子旋转对气体的性质有很强的直接影响。分子超转子的性质预计是相当独特的。其中一些最近已经被我们的团队证明和研究。该提案的目的是首次观察和研究被特殊设计的激光脉冲（称为“光学离心机”）设置为超快旋转的分子的磁性。通过在单分子水平上诱导磁场，我们提出了一种纳米尺度的超快磁开关。该技术将适用于绝大多数气体，甚至环境空气。 通过激光束控制，磁开关可以远程激活，即在离激光源一定距离处激活。