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  • Institute for Quantum Computing

    Numerical Engineering of Robust Adiabatic Operations

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    Abstract

     

    Adiabatic operations are powerful tools for robust quantum control in numerous fields of physics, chemistry, and quantum information science. The inherent robustness due to adiabaticity can, however, be impaired in applications requiring short evolution times. We present a single versatile gradient-based optimization protocol that combines adiabatic control with effective Hamiltonian engineering in order to design adiabatic operations tailored to the specific imperfections and resources of an experimental setup. The practicality of the protocol is demonstrated by engineering a fast, 2.3 Rabi cycle-long adiabatic inversion pulse for magnetic resonance with built-in robustness to Rabi field inhomogeneities and resonance offsets. The performance and robustness of the pulse is validated in a nanoscale force-detected magnetic resonance experiment on a solid-state sample, indicating an ensemble-averaged inversion accuracy of 99.997%. We further showcase the utility of our protocol by providing examples of adiabatic pulses robust to spin-spin interactions, parameter-selective operations, and operations connecting arbitrary states, each motivated by experiments.

    © Tabatabaei, S., Haas, H., Rose, W., Yager, B., Piscitelli, M., Sahafi, P., Jordan, A., Poole, P. J., Dalacu, D., & Budakian, R. (2021). Numerical Engineering of Robust Adiabatic Operations. Physical Review Applied, 15(4). https://doi.org/10.1103/physrevapplied.15.044043

    Author(s)

    Sahand Tabatabaei, Holger Haas, William Rose, Ben Yager, Michèle Piscitelli, Pardis Sahafi, Andrew Jordan, Philip J. Poole, Dan Dalacu, Raffi Budakian

    Date

    2021-04-27

    Publication

    Physical Review Applied

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