Robust Atom Optics for Bragg Atom Interferometry
- URL: http://arxiv.org/abs/2303.16950v2
- Date: Fri, 7 Apr 2023 23:42:46 GMT
- Title: Robust Atom Optics for Bragg Atom Interferometry
- Authors: Garrett Louie, Zilin Chen, Tejas Deshpande, Timothy Kovachy
- Abstract summary: We present simulation studies of robust Bragg pulses developed through numerical quantum optimal control.
The optimized sequences maintain over five times better contrast with tens of $hbar k$ momentum separation.
Such pulses could allow operation of Bragg atom interferometers with unprecedented sensitivity, improved contrast, and hotter atom sources.
- Score: 0.10499611180329801
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Multi-photon Bragg diffraction is a powerful method for fast, coherent
momentum transfer of atom waves. However, laser noise, Doppler detunings, and
cloud expansion limit its efficiency in large momentum transfer (LMT) pulse
sequences. We present simulation studies of robust Bragg pulses developed
through numerical quantum optimal control. Optimized pulse performance under
noise and cloud inhomogeneities is analyzed and compared to analogous Gaussian
and adiabatic rapid passage (ARP) pulses in simulated LMT Mach-Zehnder
interferometry sequences. The optimized pulses maintain robust population
transfer and phase response over a broader range of noise, resulting in
superior contrast in LMT sequences with thermal atom clouds and intensity
inhomogeneities. Large optimized LMT sequences use lower pulse area than
Gaussian pulses, making them less susceptible to spontaneous emission loss. The
optimized sequences maintain over five times better contrast with tens of
$\hbar k$ momentum separation and offers more improvement with greater LMT.
Such pulses could allow operation of Bragg atom interferometers with
unprecedented sensitivity, improved contrast, and hotter atom sources.
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