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Trapped Ion Quantum Computing

Efficient detection of nonclassicality using moments of the Wigner function

arXiv
Authors: Bivas Mallick, Sudip Chakrabarty, Saheli Mukherjee, Ananda G. Maity, A. S. Majumdar

Year

2024

Paper ID

65306

Status

Preprint

Abstract Read

~2 min

Abstract Words

101

Citations

N/A

Abstract

States with a negative Wigner function, a significant subclass of nonclassical states, serve as a valuable resource for various quantum information processing tasks. Here, we provide a criterion for detecting such quantum states characterized by a negative Wigner function. Our method relies on evaluating moments of the Wigner function, which involves computing simple functionals and can be implemented in a real experiment without the need for full state tomography or Wigner function reconstruction. We provide explicit examples to support our detection scheme. Further, we propose an experimental method utilizing the mode SWAP operator to realize these moments in a real experiment.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2024 reference point for readers tracking recent quantum research.
  • States with a negative Wigner function, a significant subclass of nonclassical states, serve as a valuable resource for various quantum information processing tasks.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2407.12116 [2] arXiv https://arxiv.org/abs/2407.12116 [3] Publisher https://arxiv.org/abs/2407.12116

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