Efficient dynamic nuclear polarization at high magnetic fields.
By applying a new technique for dynamic nuclear polarization involving simultaneous excitation of electronic and nuclear transitions, we have enhanced the nuclear polarization of the nitrogen nuclei in 15N@C60 by a factor of 10(3) at a fixed temperature of 3 K and a magnetic field of 8.6 T, more than twice the maximum enhancement reported to date. This methodology will allow the initialization of the nuclear qubit in schemes exploiting N@C60 molecules as components of a quantum information processing device.
Center for Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory at Florida State University, Tallahassee, Florida 32310, USA. g.morley@ucl.ac.uk
Gavin W
GW
Morley
Johan
J
van Tol
Arzhang
A
Ardavan
Kyriakos
K
Porfyrakis
Jinying
J
Zhang
G Andrew D
GA
Briggs