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Parameter estimation of wormholes beyond the Heisenberg limit

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arxiv 1811.02395 v2 pith:SOKDNRIU submitted 2018-11-06 gr-qc astro-ph.IMquant-ph

Carlos Sabín , Carlos Sanchidrián Vaca This is my paper · ORCID
classification gr-qcastro-ph.IMquant-ph
keywords nonlinearwormholesbeyondestimateheisenberginterferometerlimitmassless
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We propose to exploit the quantum properties of nonlinear media to estimate the parameters of massless wormholes. The spacetime curvature produces a change in length with respect to Minkowski spacetime that can be estimated in principle with an interferometer. We use quantum metrology techniques to show that the sensitivity is improved with nonlinear media and propose a nonlinear Mach-Zehnder interferometer to estimate the parameters of massless wormholes that scales beyond the Heisenberg limit.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Postselected amplification applied to Mach-Zehnder-interferometer for phase shift measurement of optical coherent states

    quant-ph 2024-11 conditional novelty 6.0 of 10

    For coherent states in a Mach-Zehnder interferometer, postselected dark-port detection yields an amplified phase shift that matches weak-value amplification in the AAV limit, but with shot-noise (1/√N) scaling rather ...

  2. Optical phase estimation via homodyne measurement in the presence of saturation effect of photodetectors

    quant-ph 2025-01 reject novelty 4.0 of 10

    For coherent light, a saturating photodetector's average current is I=I_max(1-exp(-N/Ñ_sat)); inverting this relation recovers the optical phase in the nonlinear response regime.

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