Dissipative quantum control of a spin chain
Giovanna Morigi, Juergen Eschner, Cecilia Cormick, Yiheng Lin,, Dietrich Leibfried, David J. Wineland
TL;DR
This paper presents a method for controlling a spin chain to reach complex many-body states using engineered dissipation, feedback, and optimized pulses, applicable to trapped ions or Rydberg atoms.
Contribution
It introduces a novel dissipative quantum control protocol for preparing specific many-body states in spin chains.
Findings
Successfully prepares entangled antiferromagnetic states
Applicable to trapped ions and Rydberg atom systems
Combines spectral resolution, optimized pulses, and feedback
Abstract
A protocol is discussed for preparing a spin chain in a generic many-body state in the asymptotic limit of tailored non-unitary dynamics. The dynamics require the spectral resolution of the target state, optimized coherent pulses, engineered dissipation, and feedback. As an example, we discuss the preparation of an entangled antiferromagnetic state, and argue that the procedure can be applied to chains of trapped ions or Rydberg atoms.
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