Document Type
Article
Publication Date
5-20-2016
Publication Title
Physical Review A - Atomic, Molecular, and Optical Physics
Department
Department of Physics and Astronomy
Abstract
Adiabatic pulses are used extensively to enable robust control of quantum operations. We introduce an approach to adiabatic control that uses the superadiabatic quality factor as a performance metric to design robust, high-fidelity pulses. This approach permits the systematic design of quantum control schemes to maximize the adiabaticity of a unitary operation in a particular time interval given the available control resources. The interplay between adiabaticity, fidelity, and robustness of the resulting pulses is examined for the case of single-qubit inversion, and superadiabatic pulses are demonstrated to have improved robustness to control errors. A numerical search strategy is developed to find a broader class of adiabatic operations, including multiqubit adiabatic unitaries. We illustrate the utility of this search strategy by designing control waveforms that adiabatically implement a two-qubit entangling gate for a model NMR system.
DOI
10.1103/PhysRevA.93.052329
Dartmouth Digital Commons Citation
Vandermause, Jonathan and Ramanathan, Chandrasekhar, "Superadiabatic Control of Quantum Operations" (2016). Dartmouth Scholarship. 1910.
https://digitalcommons.dartmouth.edu/facoa/1910
