Entanglement-Enhanced Quantum Nano-Vibrometry

TL;DR

This paper demonstrates that entanglement-enhanced quantum interferometry can achieve high-resolution, loss-resilient nanometer-scale vibrational measurements at frequencies up to 21 kHz, showing a quantum advantage over classical methods.

Contribution

The paper introduces extreme energy entanglement in quantum nano-vibrometry, enabling fast, precise measurements with resilience to loss and background noise, surpassing classical techniques.

Findings

Achieved vibrational measurements up to 21 kHz frequency.

Validated nanometer-scale measurement precision and accuracy.

Observed quantum advantage in noisy, lossy environments.

Abstract

The study of dynamic systems at the nanometer scale can benefit from the loss and background resilience offered by quantum two-photon interference. However, fast measurements with the required resolution are difficult to realize. As a solution, we introduce extreme energy entanglement between the photons undergoing interference. Using a flux probing analysis technique, we recover vibrational signals with frequencies as high as 21 kHz. Along with validating nanometer-scale precision and accuracy, we observe a significant quantum advantage when measuring in the presence of loss and background.