Speaker: Dr Alexander Wood
Affiliation: University of Melbourne
Abstract
Diamond is host to many colour centres: impurities or lattice defects that are optically active. Several of these defects also have electronic spin, and the most widely studied of these is the nitrogen-vacancy centre, which has spin coherence times in excess of 1 ms at room temperature. The long coherence times and robust nature of diamond make it a prime candidate for quantum sensing in challenging environments: such as being mechanically rotated at up to 500,000rpm, where classical rotation occurs on the same timescale as quantum coherence and has measurable effects. As well as the intrinsic interest such a platform offers, it also confers several surprising advantages to applications, such as DC magnetometry below the usual T2* limit for standard diamond magnetometers. In this talk, I will discuss our experiments with rapidly rotating diamonds, and a new direction of research, where we investigate optical control of the electronic charge state of colour centres in diamond, including the silicon-vacancy centre in diamond, with an eye towards improved photoelectric detection.
About Physics Seminars
The weekly Physics Seminar series focuses on a broad range of physics research within SMP, along with frequent presentations from visiting researchers. Seminars are usually scheduled for 1.00pm on Tuesdays.
The talks are typically more specialised than a colloquium but are often attended by staff and PhD students across a broad range of areas. Speakers are thus encouraged to include introductory material in the talks.
All SMP researchers and HDR students are encouraged to speak. Please email Lewis Williamson to register your interest.
The seminars are open so there is no need to register your attendance.
Venue
Room: 407 (and via Zoom:
https://uqz.zoom.us/j/94116861984)