Harrie Massey Lecture 2014: Prof. Steven Chu, Nobel Prize in Physics 1997, Former US Secretary of Energy
Date: Weds 19th March More...
Date: Fri 21 Mar 18:30- 20:00 & Sat 22 Mar 14:00-15:30 More...
Quantum control of hybrid nuclear–electronic qubits
14 December 2012
G.W. Morley, P. Lueders, M.H. Mohammady, S.J. Balian, G. Aeppli, C.W.M. Kay, W.M. Witzel, G. Jeschke, T.S. Monteiro
Members of the UCL AMO group and their collaborators
have demonstrated quantum control of a hybridised nuclear-electronic spin
system. The group has been investigating the magnetic resonance properties of
bismuth-doped silicon, and the potential of such a system as a platform for
Their research has built upon previous work whereby interesting possibilities in the hybrid regime were identified when the nuclear and electronic spins are strongly entangled. (Mohammady, Morley, Monteiro, Physical Review Letters, 105, 067602 (2010))
For example, operating on a nuclear spin
typically takes about 1000 times longer than an electronic spin i.e. microseconds, rather than nanoseconds. This is due to the substantially
smaller magnetic moment. However this paper demonstrates that in the hybrid
regime, the required pulse times equalise; allowing a considerable increase in speed of quantum operations.