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Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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An atomic Fabry-Perot interferometer using a pulsed interacting Bose-Einstein condensate.

P Manju1, K S Hardman1, P B Wigley1

  • 1Atomlaser and Quantum Sensors Group, Department of Quantum Science, Research School of Physics, The Australian National University, Canberra, 2601, Australia.

Scientific Reports
|September 15, 2020
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Summary
This summary is machine-generated.

We demonstrate atomic Fabry-Perot resonances using Bose-Einstein condensates (BECs) and double Gaussian barriers. These resonances are observable with current experimental parameters for ultracold atomic sources.

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Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Quantum Mechanics
  • Condensed Matter Physics

Background:

  • Bose-Einstein condensates (BECs) are quantum states of matter with unique wave-like properties.
  • Atomic interferometry, particularly using BECs, offers high precision for measurements.
  • Fabry-Perot interferometers are crucial for wave manipulation and resonance studies.

Purpose of the Study:

  • To numerically demonstrate atomic Fabry-Perot resonances for a pulsed interacting BEC source.
  • To identify experimentally feasible parameters for observing these resonances.
  • To investigate the influence of BEC properties on resonant transmission peaks.

Main Methods:

  • Numerical simulations using the non-polynomial Schrödinger equation (effective 1D Gross-Pitaevskii equation).
  • Analytical model for a plane matter-wave incident on double rectangular barriers to determine parameters.
  • Investigation of atom number, scattering length, and BEC momentum width effects.

Main Results:

  • Atomic Fabry-Perot resonances were numerically demonstrated for BECs passing through double Gaussian barriers.
  • Resonances are observable with experimentally feasible parameters for [Formula: see text]Rb atomic sources.
  • High contrast resonant transmission peaks were observed for non-interacting and interacting BECs under specific conditions.

Conclusions:

  • Theoretical demonstration of atomic Fabry-Perot resonances with pulsed interacting BECs.
  • Provides a pathway for experimental realization of atomic Fabry-Perot interferometers using ultracold atomic sources.
  • Highlights the impact of BEC properties on resonance phenomena.