High-powered optical superlattice with robust phase stability for quantum gas microscopy

作者：Meng-Da Li, Wan Lin, An Luo, Wei-Yong Zhang, Hui Sun, Bo Xiao, Yong-Guang Zheng, Zhen-Sheng Yuan, Jian-Wei Pan · 发表于：Optics Express · 年份：2021 · DOI：10.1364/oe.423776 · 被引用次数：15 · 研究领域：Cold Atom Physics and Bose-Einstein Condensates、Quantum Information and Cryptography、Quantum many-body systems

Optical superlattice has a wide range of applications in the study of ultracold atom physics. Especially, it can be used to trap and manipulate thousands of atom pairs in parallel which constitutes a promising system for quantum simulation and quantum computation. In the present work, we report on a high-power optical superlattice formed by a 532-nm and 1064-nm dual-wavelength interferometer with a short lattice spacing of 630 nm. The short-term fluctuation (in 10 seconds) of the relative phase between the short lattice and the long lattice is measured to be 0.003 π , which satisfies the needs for performing two-qubit gates among neighboring lattice sites. We further implement this superlattice in a 87 Rb experiment with a quantum gas microscope of single-site resolution, where the high-power 532-nm laser is necessary for pinning atoms in the short lattice during imaging, providing a unique platform for engineering quantum states.