A new spin on quantum sensing in diamond


October 18, 2017

Speakers: Andy Martin


Durham University

E101 (Engineering)

About this event

The Larmor theorem states that the effects of a uniform magnetic field on a classical magnetic moment are equivalent to rotation of the system about the axis of the field. We use nitrogen-vacancy (NV) centers in a diamond to detect effective magnetic fields generated by physically rotating the host diamond crystal. Rotationally-induced magnetic fields depend on the rotation axis and the magnetic field orientation, and perturb the precession frequency of carbon-13 nuclear spins in the diamond lattice much more strongly than the NV electron spin. We detect the precessing dipole field with an ensemble of NV sensors to infer the rotationally-induced field. These results elucidate the profound connection between magnetism and physical rotation, and establish a unique, non-magnetic means of controlling the nuclear spin bath surrounding the NV center.
Date: Wednesday, 18 October 2017
Time: 12 noon – 1:00pm 
Location: E101 (Engineering)

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