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Publication Citation: Coherent Diabatic Ion Transport and Separation in a Multizone Trap Array

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Author(s): Ryan S. Bowler; John P. Gaebler; Yiheng Lin; Ting Rei Tan; David Hanneke; John D. Jost; J. Home; Dietrich G. Leibfried; David J. Wineland;
Title: Coherent Diabatic Ion Transport and Separation in a Multizone Trap Array
Published: August 24, 2012
Abstract: We investigate ion motion dynamics during the transport between and separation into spatially distinct trap locations in a multi-zone trap array. We laser-cool a single $\ensuremath{^{9}{\rm {Be}^{+}}}$ ion held in a linear Paul trap to near its ground state of motion in a 2~MHz harmonic well and transport it across $370\,\mu m$ in 16 periods of oscillation. During transport the ion is excited to a displaced coherent state with $\bar{n}\thickapprox1.6$~quanta but returns close to its motional ground state with $\bar{n}\thickapprox0.2$ quanta. We achieve similar results for two ions. We also separate multiple ions from one potential well to two distinct potential wells. With two ions this is accomplished in $55\,\mu s$, with final excitations of $\bar{n}\thickapprox2$ quanta for each ion. Fast coherent transport and separation can reduce the time overhead in certain architectures for quantum information processing with trapped ions.
Citation: Physical Review Letters
Pages: pp. 080502-1 - 080502-4
Keywords: atom dynamics;atom trapping;ion traps;laser cooling;quantum state engineering;quantum entanglement;quantum information
Research Areas: Physics