Bang-bang shortcut to adiabaticity in trapped-ion quantum simulators
Author(s)Han, Shuyang; Yoshimura, B. T.; Freericks, J. K.; Balasubramanian, Shankar N.
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We model the bang-bang optimization protocol as a shortcut to adiabaticity in the ground-state preparation of a trapped-ion quantum simulator. Compared to a locally adiabatic evolution, the bang-bang protocol typically produces a lower ground-state probability, but its implementation is so much simpler than the locally adiabatic approach, that it can become a competitive choice to use for maximizing ground-state preparation in systems that cannot be solved with conventional computers. We describe how one can optimize the shortcut and provide specific details for how it can be implemented with current trapped-ion quantum simulators. However, when frustration is strong enough, no method appears to work well for adiabatic state preparation within the experimental time frames, and one must confront the issue of dealing with diabatic excitations within the simulation.
DepartmentMassachusetts Institute of Technology. Department of Physics
Physical Review A
American Physical Society
Balasubramanian, S. et al. "Bang-bang shortcut to adiabaticity in trapped-ion quantum simulators." Physical Review A 97, 2 (February 2018): 022313 © 2018 American Physical Society
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