Low frequency phase stabilization and phase tuning of an optical lattice with a variable period

P. A. Aksentsev; V. A. Khlebnikov; I. S. Cojocaru; A. E. Rudnev; I. A. Pyrkh; D. A. Kumpilov; P. V. Trofimova; A. M. Ibrahimov; O. I. Blokhin; K. O. Frolov; S. A. Kuzmin; A. K. Zykova; D. A. Pershin; V. V. Tsyganok; A. V. Akimov

arXiv · 2506.03809

Low frequency phase stabilization and phase tuning of an optical lattice with a variable period

P. A. Aksentsev·V. A. Khlebnikov·I. S. Cojocaru·A. E. Rudnev·I. A. Pyrkh·D. A. Kumpilov·P. V. Trofimova·A. M. Ibrahimov·O. I. Blokhin·K. O. Frolov·S. A. Kuzmin·A. K. Zykova·D. A. Pershin·V. V. Tsyganok·A. V. Akimov

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Abstract

Optical lattices play a significant role in the field of cold atom physics, particularly in quantum simulations. Varying the lattice period is often a useful feature, but it presents the challenge of maintaining lattice phase stability in both stationary and varying-period regimes. Here, we report the realization of a low frequency feedback loop for a tunable optical lattice. Our scheme employs a CCD camera, a computer, and a piezoelectric actuator mounted on a mirror. Using this setup, we significantly improved the long-term stability of an optical lattice over durations exceeding 10 seconds. More importantly, we demonstrated a rapid change in the optical lattice period without any loss of phase. The developed phase stabilization algorithm can be extended to more complicated 2D latices, than just periodic lattice.

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P. A. Aksentsev, V. A. Khlebnikov, I. S. Cojocaru, A. E. Rudnev, I. A. Pyrkh, D. A. Kumpilov, P. V. Trofimova, A. M. Ibrahimov, O. I. Blokhin, K. O. Frolov, S. A. Kuzmin, A. K. Zykova, D. A. Pershin, V. V. Tsyganok, A. V. Akimov. 2025-10-20. Low frequency phase stabilization and phase tuning of an optical lattice with a variable period. https://arxiv.org/abs/2506.03809

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