Advantage of Coherent States in Ring Resonators over Any Quantum Probe Single-Pass Absorption Estimation Strategy

Abstract

Quantum states of light have been shown to enhance precision in absorption estimation over classical strategies. By exploiting interference and resonant enhancement effects, we show that coherent-state probes in all-pass ring resonators can outperform any quantum probe single-pass strategy even when normalized by the mean input photon number. We also find that under optimal conditions coherent-state probes equal the performance of arbitrarily bright pure single-mode squeezed probes in all-pass ring resonators.

7 pages, 4 figures, typos corrected, expanded section 3 and conclusion

References in corpus (3)

• Entanglement-free Heisenberg-limited phase estimation
• Optimal estimation of losses at the ultimate quantum limit with non-Gaussian states
• Optimal Quantum-Enhanced Interferometry

Cited by in corpus (5)

• Quantum-enhanced absorption spectroscopy with bright squeezed frequency combs
• Fundamental limits of pulsed quantum light spectroscopy: Dipole moment estimation
• Estimating the concentration of chiral media with bright squeezed light
• Adaptive Phase Estimation with Squeezed Vacuum Approaching the Quantum Limit
• Impact of the Unruh effect on the estimation precision of Gaussian channel parameters