• Corpus ID: 239009778

Minimum Entanglement Protocols for Function Estimation

@inproceedings{Ehrenberg2021MinimumEP,
  title={Minimum Entanglement Protocols for Function Estimation},
  author={Adam Ehrenberg and Jacob Bringewatt and Alexey V. Gorshkov},
  year={2021}
}
We derive a family of optimal protocols, in the sense of saturating the quantum Cramér-Rao bound, for measuring a linear combination of d field amplitudes with quantum sensor networks, a key subprotocol of general quantum sensor networks applications. We demonstrate how to select different protocols from this family under various constraints via linear programming. Focusing on entanglement-based constraints, we prove the surprising result that highly entangled states are not necessary to… 

Figures from this paper

References

SHOWING 1-2 OF 2 REFERENCES
* These two authors contributed equally
Refer to the Supplemental Material where we generalize beyond the assumption that |α1| > |αj| for all j > 1, provide a detailed derivation of Eq