Improved high-fidelity transport of trapped-ion qubits through a multi-dimensional array
arXiv:1106.5005 · doi:10.1103/PhysRevA.84.032314
Abstract
We have demonstrated transport of Be+ ions through a 2D Paul-trap array that incorporates an X-junction, while maintaining the ions near the motional ground-state of the confining potential well. We expand on the first report of the experiment [1], including a detailed discussion of how the transport potentials were calculated. Two main mechanisms that caused motional excitation during transport are explained, along with the methods used to mitigate such excitation. We reduced the motional excitation below the results in Ref. [1] by a factor of approximately 50. The effect of a mu-metal shield on qubit coherence is also reported. Finally, we examined a method for exchanging energy between multiple motional modes on the few-quanta level, which could be useful for cooling motional modes without directly accessing the modes with lasers. These results establish how trapped ions can be transported in a large-scale quantum processor with high fidelity.
16 pages
References in corpus (10)
- Quantum computing with trapped ions
- Complete methods set for scalable ion trap quantum information processing
- T-junction ion trap array for two-dimensional ion shuttling, storage and manipulation
- Large Scale Quantum Computation in an Anharmonic Linear Ion Trap
- Simplified motional heating rate measurements of trapped ions
- Fabrication and heating rate study of microscopic surface electrode ion traps
- Transport dynamics of single ions in segmented microstructured Paul trap arrays
- Design, Fabrication, and Experimental Demonstration of Junction Surface Ion Traps
- Deterministic reordering of 40Ca+ ions in a linear segmented Paul trap
- Ideal intersections for radio-frequency trap networks
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