International Conference on Quantum Communications, Networking, and Computing (QCNC)

Tunneling Based Atom Interferometry Using Bose-Einstein Condensate in a Double-Well Potential

S Benel, Sandra Babu, Simon A. Haine, Manju Perumbil

Published Apr 6, 2026• 0 citations

Abstract

This work presents a numerical study of a tunnelingbased interferometer implemented using a Bose-Einstein condensate (BEC) confined in a static double-well potential, where the condensate dynamics are simulated using the one-dimensional Gross-Pitaevskii equation to capture the essential mean-field behavior. By carefully configuring the central barrier parameters, the double well is engineered to act as a coherent matterwave beam splitter. A relative phase is introduced between the two arms of the interferometer, enabling the extraction of phase information through interference. We analyze the resulting interference contrast to determine the best barrier configurations that allow the system to function effectively as an interferometer. It was found that the interferometric contrast remains robust under realistic fluctuations in the barrier parameters, confirming experimental feasibility. Using a fixed barrier for both the splitting and recombination steps, we avoid the need to dynamically ramp the barrier, as in other approaches. This allows us to realize a simple and experimentally accessible interferometry scheme in the double-well potential.

DOI: 10.1109/qcnc69040.2026.00018

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