High-contrast double Bragg interferometry via detuning control
Abstract
We propose high-contrast Mach–Zehnder atom interferometers based on double Bragg diffraction (DBD) operating under external acceleration. To mitigate differential Doppler shifts and experimental imperfections, we introduce a tri-frequency laser scheme with dynamic detuning control. We evaluate four detuning-control strategies—conventional DBD, constant detuning, linear detuning sweep (DS-DBD), and a hybrid protocol combining detuning sweep with optimal control theory (OCT)—using exact numerical simulations and a five-level S-matrix model. The OCT strategy provides the highest robustness, maintaining contrast above 95% under realistic conditions, while the DS-DBD strategy sustains contrast above 90% for well-collimated Bose–Einstein condensates. These results offer practical pathways to high-contrast, large-momentum-transfer DBD-based interferometers for precision quantum sensing and fundamental physics tests.
Details
- Organisation(s)
-
Quantum Sensing
Institute of Quantum Optics
QuantumFrontiers
Laboratory of Nano and Quantum Engineering
QUEST-Leibniz Research School
- Type
- Article
- Journal
- AVS Quantum Science
- Volume
- 8
- Publication date
- 03.2026
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Computer Networks and Communications, Physical and Theoretical Chemistry, Computational Theory and Mathematics, Electrical and Electronic Engineering
- Electronic version(s)
-
https://doi.org/10.1116/5.0302856 (Access:
Open
)
https://doi.org/10.48550/arXiv.2508.10968 (Access: Open )
