Physics

Exercising Spin Control

See allHide authors and affiliations

Science  12 Oct 2012:
Vol. 338, Issue 6104, pp. 173
DOI: 10.1126/science.338.6104.173-a
CREDIT: S. KOLKOWITZ ET AL., PHYS. REV. LETT. 109 (25 SEPTEMBER 2012) HTTP://LINK.APS.ORG/ABSTRACT/ABSTRACT/PRL/V109/I13/E137601 © 2012 APS

Electron spin resonance is a powerful tool that can provide detailed information on the chemical and electronic makeup of a material. Compared to the typical measurements of bulk samples that are ensemble averages of many electron spins, the nitrogen vacancy defect, or NV center, in diamond presents the spin of a single electron. Such pinpoint spin centers can be used as a local probe of the tiny magnetic fields produced by nearby nuclear spins of the diamond lattice surrounding it and are also being explored for applications in quantum optics and quantum information science. Because the local environment of each nuclear spin is slightly different, each has its own electronic signature. Kolkowitz et al. and Taminiau et al. exploit that to demonstrate that they can address and coherently control each of the surrounding nuclear spins through their specific coupling with the NV center. The ability to sense and control the electronic properties of these NV centers and surrounding nuclear spins will have wide application, from ultrasensitive magnetometers to quantum information processing in which information can be encoded in the spin of the surrounding nuclear spins.

Phys. Rev. Lett. 109, 137601; 137602 (2012).

Navigate This Article