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Nature Physics

High Fidelity Transport of Trapped-Ion Qubits through an X-Junction Trap Array | NIST

R. B. Blakestad, Aaron P. VanDevender, C. Ospelkaus, Jason Amini, J. Britton, Dietrich G. Leibfried, David J. Wineland

Published Apr 17, 2009• 2 citations
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Scaling quantum information processors is a challenging task, requiring manipulation of a large number of qubits with high fidelity and a high degree of connectivity. For trapped ions, this can be realized in a 2D array of interconnected traps in which ions are separated, transported, and recombined to carry out quantum operations on small subsets of ions. Here, functionality of a junction connecting orthogonal linear segments in a 2D trap array to reorder a two-ion crystal is demonstrated. The secular motion of the ions experiences low energy gain and the internal qubit levels maintain coherence during the reordering process, therefore demonstrating a promising method for providing all-to-all connectivity in a large-scale, 2D or 3D trapped-ion quantum information processor.