Towards Robust Optimal Measurements Against Noise in Quantum Metrology

Abstract

Quantum parameter estimation utilizes quantum mechanical effects to attain higher measurement precision than classical schemes. In practical implementations, however, noise is inevitably present during the measurement process, causing a decrease in precision. Quantifying the impact of noise on different measurements is of considerable significance. Here, we experimentally investigate robust optimal measurements based on the theory of Fisher information measurement noise susceptibility (FI MENOS), which quantifies how susceptible a measurement is to noise. By constructing a polarizing Mach-Zehnder interferometer, we implement phase estimation under controlled noise. Our results indicate that different measurements exhibit distinct sensitivities to noise. To assess the influence of diverse noise types on precision, we further construct an experimental setup capable of introducing various forms of noise. The experimental results affirm that FI MENOS represents the worst-case scenario for estimation precision, enabling us to evaluate the noise immunity of optimal measurements. Our work provides a deeper insight into quantum metrology with noise, marking a notable advancement in quantifying the robustness of quantum estimation schemes against measurement noise effects.

References in corpus (26)

• Measurement of the fine-structure constant as a test of the Standard Model
• Beating the Standard Quantum Limit with Four Entangled Photons
• Entanglement-free Heisenberg-limited phase estimation
• New determination of the fine structure constant and test of the quantum electrodynamics
• An Atomic Gravitational Wave Interferometric Sensor (AGIS)
• Entanglement-enhanced measurement of a completely unknown phase
• Mitigating depolarizing noise on quantum computers with noise-estimation circuits
• Experimental noise filtering by quantum control
• Quantum metrology with imperfect states and detectors
• Experimental demonstration of entanglement-enhanced classical communication over a quantum channel with correlated noise
• Entanglement-Enhanced Quantum Metrology in Colored Noise by Quantum Zeno Effect
• Quantum Crosstalk Robust Quantum Control
• Error-Mitigated Quantum Metrology via Virtual Purification
• Quantum metrology with imperfect measurements
• Optimal Strategies of Quantum Metrology with a Strict Hierarchy
• Using adaptiveness and causal superpositions against noise in quantum metrology
• Floquet Engineering to Overcome No-Go Theorem of Noisy Quantum Metrology
• Low-Overhead Transversal Fault Tolerance for Universal Quantum Computation
• Experimental quantum key distribution over highly noisy channels
• Toward Heisenberg Scaling in Non-Hermitian Metrology at the Quantum Regime
• Measurement noise susceptibility in quantum estimation
• Quantum parameter estimation of non-Hermitian systems with optimal measurements
• Enhanced Quantum Metrology with Non-Phase-Covariant Noise
• Fisher information susceptibility for multiparameter quantum estimation
• Enhancing Dynamic Range of Sub-Quantum-Limit Measurements via Quantum Deamplification
• Volcano Architecture for Scalable Quantum Processor Units