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Trapped Ion Quantum Computing

Direct Characterization of Quantum Dynamics with Noisy Ancilla

arXiv
Authors: Eugene Dumitrescu, Travis S. Humble

Year

2015

Paper ID

27819

Status

Preprint

Abstract Read

~2 min

Abstract Words

100

Citations

N/A

Abstract

We present methods for the direct characterization of quantum dynamics (DCQD) in which both the principal and ancilla systems undergo noisy processes. Using a concatenated error detection code, we discriminate between located and unlocated errors on the principal system in what amounts to filtering of ancilla noise. The example of composite noise involving amplitude damping and depolarizing channels is used to demonstrate the method, while we find the rate of noise filtering is more generally dependent on code distance. Our results indicate the accuracy of quantum process characterization can be greatly improved while remaining within reach of current experimental capabilities.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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  • We present methods for the direct characterization of quantum dynamics (DCQD) in which both the principal and ancilla systems undergo noisy processes.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1508.03053 [2] arXiv https://arxiv.org/abs/1508.03053 [3] Publisher https://arxiv.org/abs/1508.03053

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