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October 8, 2025Open Access

Quantum metrology in a nonlinear-interferometer with feedback

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Proposed nonlinear interferometer utilizes feedback to enhance phase estimation, suggesting superiority in low-loss scenarios.

The analysis demonstrates that phase estimation accuracy improves with each feedback loop.
Quantum fisher information increases significantly in the proposed feedback schemes compared to standard setups.
Feedback mechanisms are sensitive to photon loss, particularly when using vacuum states as inputs.
The research reveals enhanced phase variance performance in low-loss conditions compared to traditional nonlinear methods.

Singh et al. (2025) studied this question.

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October 8, 2025Open Access

View Full Paper

Ask AI

Bookmark

Authors

Proposed nonlinear interferometer utilizes feedback to enhance phase estimation, suggesting superiority in low-loss scenarios.

The analysis demonstrates that phase estimation accuracy improves with each feedback loop.
Quantum fisher information increases significantly in the proposed feedback schemes compared to standard setups.
Feedback mechanisms are sensitive to photon loss, particularly when using vacuum states as inputs.
The research reveals enhanced phase variance performance in low-loss conditions compared to traditional nonlinear methods.

Singh et al. (2025) studied this question.

View Full Paper

Ask AI

Bookmark