Prof Jonathan Jones: Publications

Composite pulses for interferometry in a thermal cold atom cloud

Physical Review A American Physical Society (APS) 90:3 (2014) 033608

Authors:

Alexander Dunning, Rachel Gregory, James Bateman, Nathan Cooper, Matthew Himsworth, Jonathan A Jones, Tim Freegarde

Composite pulses for interferometry in a thermal cold atom cloud

(2014)

Authors:

Alexander Dunning, Rachel Gregory, James Bateman, Nathan Cooper, Matthew Himsworth, Jonathan A Jones, Tim Freegarde

Experimental Heat-Bath Cooling of Spins

(2014)

Authors:

Gilles Brassard, Yuval Elias, José M Fernandez, Haggai Gilboa, Jonathan A Jones, Tal Mor, Yossi Weinstein, Li Xiao

Nested composite NOT gates for quantum computation

(2013)

Further analysis of some symmetric and antisymmetric composite pulses for tackling pulse strength errors.

J Magn Reson 230 (2013) 145-154

Authors:

Sami Husain, Minaru Kawamura, Jonathan A Jones

Abstract:

Composite pulses have found widespread use in both conventional Nuclear Magnetic Resonance experiments and in experimental quantum information processing to reduce the effects of systematic errors. Here we describe several families of time symmetric and antisymmetric fully compensating composite pulses, inspired by the previous Fn, Gn and BB1 families family developed by Wimperis. We describe families of composite 180° pulses (not gates) which exhibit unprecedented tolerance of pulse strength errors without unreasonable sensitivity to off-resonance errors, and related families with more exotic tailored responses. Next we address the problem of extending these methods to other rotation angles, and discuss numerical results for 90° pulses. Finally we demonstrate the performance of some 90° and 180° pulses in NMR experiments.

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