Engineering adiabaticity at an avoided crossing with optimal control
Open Access
- 28 April 2015
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 91 (4), 043421
- https://doi.org/10.1103/physreva.91.043421
Abstract
We investigate ways to optimize adiabaticity and diabaticity in the Landau-Zener model with nonuniform sweeps. We show how diabaticity can be engineered with a pulse consisting of a linear sweep augmented by an oscillating term. We show that the oscillation leads to jumps in populations whose value can be accurately modeled using a model of multiple, photon-assisted Landau-Zener transitions, which generalizes work by Wubs et al. [ New J. Phys. 7, 218 (2005)]. We extend the study on diabaticity using methods derived from optimal control. We also show how to preserve adiabaticity with optimal pulses at limited time, finding a nonuniform quantum speed limit.Keywords
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Funding Information
- Army Research Office
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