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A stable phase-locking-free single beam optical lattice with multiple configurations
Yirong Wang1,2, Xiaoyu Dai1,2, Xue Zhao1,2
1School of Physics and Beijing Key Laboratory of Opto-Electronic Functional Materials and Micro-Nano Devices, Renmin University of China, Beijing 100872, China.
The Review of Scientific Instruments
|December 4, 2025
Summary
Researchers developed a novel, phase-locking-free method for creating stable optical lattices using a single laser and a prism. This simplifies experiments for quantum simulation and computation by eliminating complex stabilization systems.
Area of Science:
- Atomic, Molecular, and Optical Physics
- Quantum Technologies
- Nanophotonics
Background:
- Optical lattices are crucial for quantum simulation, metrology, and computation, typically requiring complex phase-locking systems for stability.
- Stabilizing optical lattices involves managing relative phase fluctuations of multiple laser beams, posing experimental challenges.
Purpose of the Study:
- To introduce a simplified, phase-locking-free scheme for generating stable optical lattices.
- To demonstrate the versatility of the new method in creating various lattice configurations.
Main Methods:
- Utilizing a single laser beam passed through an n-fold symmetric prism with large apex angles.
- Implementing interference among different deflected parts of the single laser beam to form the lattice.
- Employing stability measurements to quantify lattice constant and position drift.
Main Results:
- Successfully demonstrated a phase-locking-free optical lattice generation scheme.
- Created stable triangular and tenfold symmetric quasi-crystalline lattices.
- Achieved lattice constant changes below 1.14% and lattice position drifts below 1.61%.
Conclusions:
- The prism-based method offers a robust and simplified approach to optical lattice generation, eliminating the need for complex phase-locking systems.
- This technique enhances the stability and experimental feasibility of optical lattices for quantum applications.
- The demonstrated ability to create diverse lattice structures, including quasi-crystalline ones, broadens the scope of quantum simulation and manipulation.
