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Coherent Diabatic Ion Transport and Separation in a Multizone Trap Array



Ryan S. Bowler, John P. Gaebler, Yiheng Lin, Ting Rei Tan, David Hanneke, John D. Jost, J. Home, Dietrich G. Leibfried, David J. Wineland


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.
Physical Review Letters


atom dynamics, atom trapping, ion traps, laser cooling, quantum state engineering, quantum entanglement, quantum information


Bowler, R. , Gaebler, J. , Lin, Y. , , T. , Hanneke, D. , Jost, J. , Home, J. , Leibfried, D. and Wineland, D. (2012), Coherent Diabatic Ion Transport and Separation in a Multizone Trap Array, Physical Review Letters, [online], (Accessed April 24, 2024)
Created August 24, 2012, Updated February 19, 2017