High-order coherent control sequences of finite-width pulses
Theoretische Physik I, Technische Universität Dortmund - Otto-Hahn Straße 4, 44221 Dortmund, Germany, EU
Accepted: 11 August 2011
The performance of sequences of designed pulses of finite length τ is analyzed for a bath of spins and it is compared with that of sequences of ideal, instantaneous pulses. The degree of the design of the pulse strongly affects the performance of the sequences. Non-equidistant, adapted sequences of pulses, which equal instantaneous ones up to , outperform equidistant or concatenated sequences. Moreover, they do so at low energy cost which grows only logarithmically with the number of pulses, in contrast to standard pulses with linear growth.
PACS: 03.67.Pp – Quantum error correction and other methods for protection against decoherence / 82.56.Jn – Pulse sequences in NMR / 03.67.Lx – Quantum computation architectures and implementations
© EPLA, 2011