Will spin-relaxation times in molecular magnets permit quantum information processing?
Using X-band pulsed electron-spin resonance, we report the intrinsic spin-lattice (T1) and phase-coherence (T2) relaxation times in molecular nanomagnets for the first time. In Cr7M heterometallic wheels, with M=Ni and Mn, phase-coherence relaxation is dominated by the coupling of the electron spin to protons within the molecule. In deuterated samples T2 reaches 3 micros at low temperatures, which is several orders of magnitude longer than the duration of spin manipulations, satisfying a prerequisite for the deployment of molecular nanomagnets in quantum information applications.
Ardavan
Arzhang
A
Clarendon Laboratory, Department of Physics, University of Oxford, OX1 3PU, United Kingdom.
Rival
Olivier
O
Morton
John J L
JJ
Blundell
Stephen J
SJ
Tyryshkin
Alexei M
AM
Timco
Grigore A
GA
Winpenny
Richard E P
RE