Affiliation:
1. University of Colorado Boulder
2. Lawrence Livermore National Laboratory
3. University of California, San Diego
Abstract
Experimental limitations such as optical loss and noise have prevented entanglement-enhanced measurements from demonstrating a significant quantum advantage in sensitivity. Holland-Burnett entangled states can mitigate these limitations and still present a quantum advantage in sensitivity. Here we model a fiber-based Mach-Zehnder interferometer with internal loss, detector efficiency, and external phase noise and without pure entanglement. This model features a practical fiber source that transforms the two-mode squeezed vacuum (TMSV) into Holland-Burnett entangled states. We predict that a phase sensitivity 28% beyond the shot noise limit is feasible with current technology. Simultaneously, a TMSV source can provide about 25 times more photon flux than other entangled sources. This system will make fiber-based quantum-enhanced sensing accessible and practical for remote sensing and probing photosensitive materials.
Funder
Lawrence Livermore National Laboratory
Advanced Research Projects Agency - Energy
National Science Foundation
University of Colorado Boulder
Subject
Atomic and Molecular Physics, and Optics