Magnetic Resonance with Single Nuclear-Spin Sensitivity
Magnetic Resonance with Single Nuclear-Spin Sensitivity
Alexander Sushkov, Harvard University
Date and time:
Mon, Mar 30, 2015 - 12:15pm
Location:
ILC N101
Category:
Condensed Matter Seminar
Abstract:
Our method of nanoscale magnetic sensing and imaging makes use of
nitrogen-vacancy (NV) color centers a few nanometers below the surface of a
diamond crystal. Using individual NV centers, we perform NMR experiments on
single protein molecules, labeled with carbon-13 and deuterium isotopes. In
order to achieve single nuclear-spin sensitivity, we use isolated
electronic-spin quantum bits (qubits), that are present on the diamond
surface, as magnetic resonance "reporters". Their quantum state is
coherently manipulated and measured optically via a proximal NV center. This
system is used for sensing, coherent coupling, and imaging of individual
proton spins on the diamond surface with angstrom resolution, under ambient
conditions, at room temperature. Our approach may enable magnetic structural
imaging of individual complex molecules, and realizes a new platform for
probing novel materials, and manipulation of interacting spin systems.
Department of Physics