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Trapped Ion Quantum Computing

Quantifying Coherence and Entanglement via Simple Measurements

arXiv
Authors: Graeme Smith, John A. Smolin, Xiao Yuan, Qi Zhao, Davide Girolami, Xiongfeng Ma

Year

2017

Paper ID

44295

Status

Preprint

Abstract Read

~2 min

Abstract Words

86

Citations

N/A

Abstract

Coherence and entanglement are fundamental properties of quantum systems, promising to power the near future quantum computers, sensors and simulators. Yet, their experimental detection is challenging, usually requiring full reconstruction of the system state. We show that one can extract quantitative bounds to the relative entropy of coherence and the coherent information, coherence and entanglement quantifiers respectively, by a limited number of purity measurements. The scheme is readily implementable with current technology to verify quantum computations in large scale registers, without carrying out expensive state tomography.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2017 reference point for readers tracking recent quantum research.
  • Coherence and entanglement are fundamental properties of quantum systems, promising to power the near future quantum computers, sensors and simulators.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1707.09928 [2] arXiv https://arxiv.org/abs/1707.09928 [3] Publisher https://arxiv.org/abs/1707.09928

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