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Trapped Ion Quantum Computing Quantum Simulation

Versatile laser-free trapped-ion entangling gates

arXiv

Authors: R. T. Sutherland, R. Srinivas, S. C. Burd, D. Leibfried, A. C. Wilson, D. J. Wineland, D. T. C. Allcock, D. H. Slichter, S. B. Libby

Year

2018

Paper ID

23943

Status

Preprint

Abstract Read

~2 min

Abstract Words

113

Citations

N/A

Abstract

We present a general theory for laser-free entangling gates with trapped-ion hyperfine qubits, using either static or oscillating magnetic-field gradients combined with a pair of uniform microwave fields symmetrically detuned about the qubit frequency. By transforming into a `bichromatic' interaction picture, we show that either {hatσ_φotimeshatσ_φ} or {hatσ_zotimeshatσ_z} geometric phase gates can be performed. The gate basis is determined by selecting the microwave detuning. The driving parameters can be tuned to provide intrinsic dynamical decoupling from qubit frequency fluctuations. The {hatσ_zotimeshatσ_z} gates can be implemented in a novel manner which eases experimental constraints. We present numerical simulations of gate fidelities assuming realistic parameters.

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We present a general theory for laser-free entangling gates with trapped-ion hyperfine qubits, using either static or oscillating magnetic-field gradients combined with a pair...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1810.08300 [2] arXiv https://arxiv.org/abs/1810.08300 [3] Publisher https://arxiv.org/abs/1810.08300

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