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

Dong，Xiangyu1; Wu，Chengyang1; Yu，Zhongcheng1; Tian，Jinyuan1; Wang，Zhongkai2; Chen，Xuzong1; Jin，Shengjie1; Zhou，Xiaoji1

2022-11-07

10.1364/OE.474257

Optics Express   Impact Factor & Quartile

1094-4087

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 π/2 pulse. We observe clear Ramsey fringes and analyze the decoherence mechanism of fringes. Further, we design an echo π 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.

English

Others

National Natural Science Foundation of China[11334001];National Natural Science Foundation of China[12104020];National Key Research and Development Program of China[2021YFA0718300];National Key Research and Development Program of China[2021YFA1400901];National Natural Science Foundation of China[61727819];

2-s2.0-85141514188

Scopus

1.State Key Laboratory of Advanced Optical Communication System and Network,School of Electronics,Peking University,Beijing,100871,China
2.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Dong，Xiangyu,Wu，Chengyang,Yu，Zhongcheng,et al. Atomic Ramsey interferometry with S- and D-band in a triangular optical lattice[J]. Optics Express,2022,30(23):41437-41446.

Dong，Xiangyu.,Wu，Chengyang.,Yu，Zhongcheng.,Tian，Jinyuan.,Wang，Zhongkai.,...&Zhou，Xiaoji.(2022).Atomic Ramsey interferometry with S- and D-band in a triangular optical lattice.Optics Express,30(23),41437-41446.

Dong，Xiangyu,et al."Atomic Ramsey interferometry with S- and D-band in a triangular optical lattice".Optics Express 30.23(2022):41437-41446.