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Trapped Ion Quantum Computing

Approximation of Reachable Set for Coherently Controlled Open Quantum Systems: Application to Quantum State Engineering

arXiv
Authors: Jun Li, Dawei Lu, Zhihuang Luo, Raymond Laflamme, Xinhua Peng, Jiangfeng Du

Year

2014

Paper ID

45969

Status

Preprint

Abstract Read

~2 min

Abstract Words

95

Citations

N/A

Abstract

Precisely characterizing and controlling realistic open quantum systems is one of the most challenging and exciting frontiers in quantum sciences and technologies. In this Letter, we present methods of approximately computing reachable sets for coherently controlled dissipative systems, which is very useful for assessing control performances. We apply this to a two-qubit nuclear magnetic resonance spin system and implement some tasks of quantum control in open systems at a near optimal performance in view of purity: e.g., increasing polarization and preparing pseudo-pure states. Our work shows interesting and promising applications of environment-assisted quantum dynamics.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2014 reference point for readers tracking recent quantum research.
  • Precisely characterizing and controlling realistic open quantum systems is one of the most challenging and exciting frontiers in quantum sciences and technologies.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1412.4146 [2] arXiv https://arxiv.org/abs/1412.4146 [3] Publisher https://arxiv.org/abs/1412.4146

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