Journal Article

FZJ-2026-02220

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fast neutral-atom transport and transfer between optical tweezers

Cicali, C.FZJ* ; Calzavara, M.FZJ* ; Cuestas, E.FZJ* ; Calarco, T.FZJ* ; Zeier, R.FZJ* ; Motzoi, F.FZJ*

2025
American Physical Society College Park, Md. [u.a.]

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Please use a persistent id in citations: doi:10.1103/7r3w-8m61  doi:10.34734/FZJ-2026-02220

Abstract: We study the optimization of the transport and transfer of neutral atoms between optical tweezers, bothcritical steps in the implementation of quantum computers and simulators. We analyze four experimentallyrelevant pulse shapes (piecewise linear, piecewise quadratic, minimum jerk, and a combination of linearand minimum jerk), and we also develop a protocol using shortcuts-to-adiabaticity (STA) methods to cru-cially incorporate the time-dependent effects of static traps. By computing a measure of the final transporterror and two measures of the heating during transport, we show that our proposed STA protocol compre-hensively outperforms all the experimentally inspired pulses. After further optimizing the pulse shapes, wefind a lower bound on the protocol duration, compatible with the time at which the vibrational excitationsexceed half of the states hosted by the moving tweezer. This lower bound is at least eight times faster thanthe one reported in recent experiments, which highlights the importance of including and optimizing thetransfer from and to static traps, which may be the largest bottleneck to speed. Finally, our STA resultsdemonstrate that a modulation in the depth of the moving tweezer designed to time-dependently counter-act the effect of the static traps is key to reducing errors and reducing the pulse duration. To motivate theimplementation of our STA pulses in future experiments, we provide a simple analytical approximationfor the moving-tweezer position and depth controls.

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Contributing Institute(s):

1. Quantum Control (PGI-8)

Research Program(s):

1. 5221 - Advanced Solid-State Qubits and Qubit Systems (POF4-522) (POF4-522)
2. BMBF 13N15891 - FermiQP - Fermion-Quantenprozessor (BMBF-13N15891) (BMBF-13N15891)
3. PASQuanS2.1 - Programmable Atomic Large-scale Quantum Simulation 2 - SGA1 (101113690) (101113690)
4. QCFD - Quantum Computational Fluid Dynamics (101080085) (101080085)

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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