Atomic Ramsey interferometry with S- and D-band in a triangular optical lattice

• URL: http://arxiv.org/abs/2211.04038v1
• Date: Tue, 8 Nov 2022 06:43:46 GMT
• Title: Atomic Ramsey interferometry with S- and D-band in a triangular optical lattice
• Authors: Xiangyu Dong, Chengyang Wu, Zhongcheng Yu, Jinyuan Tian, Zhongkai Wang, Xuzong Chen, Shengjie Jin and Xiaoji Zhou
• Abstract summary: We develop a Ramsey interferometer with Bloch states in S- and D-band of a triangular optical lattice for the first time. This interferometer has potential applications in the quantum simulations of topological physics, frustrated effects, and motional qubits manipulation.
• Score: 1.0218999534163138
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Ramsey interferometers have wide applications in science and engineering. Compared with the traditional interferometer based on internal states, the interferometer with external quantum states has advantages in some applications for quantum simulation and precision measurement. Here, we develop a Ramsey interferometry with Bloch states in S- and D-band of a triangular optical lattice for the first time. The key to realizing this interferometer in two-dimensionally coupled lattice is that we use the shortcut method to construct $\pi/2$ pulse. We observe clear Ramsey fringes and analyze the decoherence mechanism of fringes. Further, we design an echo $\pi$ pulse between S- and D-band, which significantly improves the coherence time. This Ramsey interferometer in the dimensionally coupled lattice has potential applications in the quantum simulations of topological physics, frustrated effects, and motional qubits manipulation.

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