Optimal strategies for low-noise detection of atoms using resonant frequency modulation spectroscopy in cold atom interferometers

Abstract

Resonant frequency modulation spectroscopy has been previously used as a highly-sensitive method for measuring the output of cold atom interferometers. Using a detailed model that accounts for optical saturation, laser intensities and atomic densities that vary spatially, and radiation pressure on the atoms, we theoretically investigate under what parameter regimes the optimum signal-to-noise ratio is found under experimentally realistic conditions. We compare this technique to the standard method of fluorescence imaging and find that it outperforms fluorescence imaging for compact interferometers using condensed atomic sources or where the photon collection efficiency is limited. However, we find that fluorescence imaging is likely to be the preferred method when using squeezed atomic sources due to limited atom number.

arXiv comment9 pages, 5 figures

References in corpus (16)

• Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
• Sensitive Absolute Gravity Gradiometry Using Atom Interferometry
• 6-axis inertial sensor using cold-atom interferometry
• Atom-interferometric test of the equivalence principle at the $10^{-12}$ level
• Mobile quantum gravity sensor with unprecedented stability
• Gravity surveys using a mobile atom interferometer
• Characterization and limits of a cold atom Sagnac interferometer
• A quantum sensor: simultaneous precision gravimetry and magnetic gradiometry with a Bose-Einstein condensate
• A high-flux BEC source for mobile atom interferometers
• High Precision, Quantum-Enhanced Gravimetry with a Bose-Einstein Condensate
• Improving cold-atom sensors with quantum entanglement: Prospects and challenges
• High precision measurement of the 87Rb D-line tune-out wavelength
• Enhancing the sensitivity of atom-interferometric inertial sensors using robust control
• Spin Squeezing of a Bose-Einstein Condensate via Quantum Non-Demolition Measurement for Quantum-Enhanced Atom Interferometry
• Readout delay free Bragg atom interferometry using overlapped spatial fringes
• Measurement of the 87Rb D-line vector tune-out wavelength