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What is Atom Interferometry?
Atom Interferometry is a quantum sensing technique that uses the wave-like properties of atoms to measure physical quantities with very high precision. By splitting, manipulating, and recombining atomic matter waves, atom interferometers can detect changes in acceleration, gravity, rotation, and other inertial effects.
Atom interferometry is a key technology in quantum sensing, with applications including absolute gravimetry, inertial sensing, navigation, and precision measurements.
HOW Atom Interferometry Works
Atom interferometry works by manipulating the quantum wavefunction of atoms and measuring the phase difference that develops between different atomic paths. This phase difference carries information about the physical quantity being measured.
Atom preparation
Atoms are cooled and prepared in a controlled quantum state, typically using laser cooling and trapping techniques.
Matter-wave splitting
Precisely controlled laser pulses split the atomic wavefunction into different paths and subsequently redirect and recombine the atomic matter waves.
Phase measurement
External forces such as gravity or acceleration affect the atomic paths and produce a measurable phase difference. This phase shift is used to determine the physical quantity with high sensitivity.
