Scanning quantum decoherence microscopy
Jared H Cole, Lloyd CL Hollenberg
NANOTECHNOLOGY | IOP PUBLISHING LTD | Published : 2009
The use of qubits as sensitive nanoscale magnetometers has been studied theoretically and recently demonstrated experimentally. In this paper we propose a new concept, in which a scanning two-state quantum system is used to probe a sample through the subtle effects of decoherence. Mapping both the Hamiltonian and decoherence properties of a qubit simultaneously provides a unique image of the magnetic (or electric) field properties at the nanoscale. The resulting images are sensitive to the temporal as well as spatial variation in the fields created by the sample. As examples we theoretically study two applications; one from condensed matter physics, the other biophysics. The individual compo..View full abstract
Awarded by Australian Research Council Australian Professorial Fellowship
The authors would like to thank N Oxtoby, C Hill, G Milburn and G Schon for useful comments on the manuscript. This work was supported by the Australian Research Council. JHC acknowledges the support of the Alexander von Humboldt Foundation and LCLH is the recipient of an Australian Research Council Australian Professorial Fellowship (DP0770715).