The Effect of Micromotion and Local Stress in Quantum simulation with Trapped Ions in Optical Tweezers

• URL: http://arxiv.org/abs/2202.13681v1
• Date: Mon, 28 Feb 2022 11:01:30 GMT
• Title: The Effect of Micromotion and Local Stress in Quantum simulation with Trapped Ions in Optical Tweezers
• Authors: Liam Bond, Lisa Lenstra, Rene Gerritsma, Arghavan Safavi-Naini
• Abstract summary: We study the robustness of our findings in the presence of micromotion, local stress, and intensity noise. We conclude that optical tweezers are a useful method for controlling interactions in trapped ion quantum simulators.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The ability to program and control interactions provides the key to implementing large-scale quantum simulation and computation in trapped ion systems. Adding optical tweezers, which can tune the phonon spectrum and thus modify the phonon-mediated spin-spin interaction, was recently proposed as a way of programming quantum simulators for a broader range of spin models [Arias Espinoza et al., Phys. Rev. A {\bf 103}, 052437]. In this work we study the robustness of our findings in the presence of experimental imperfections: micromotion, local stress, and intensity noise. We show that the effects of micromotion can be easily circumvented when designing and optimizing tweezer patterns to generate a target interaction. Furthermore, while local stress, whereby the tweezers apply small forces on individual ions, may appear to enable further tuning of the spin-spin interactions, any additional flexibility is negligible. We conclude that optical tweezers are a useful method for controlling interactions in trapped ion quantum simulators in the presence of micromotion and imperfections in the tweezer alignment, but require intensity stabilization on the sub-percent level.

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