Abstract

We report a novel, to the best of our knowledge, double-quantum–zero-quantum two-dimensional coherent spectroscopy (2DCS) that allows direct detection of the quantum coherence between multiparticle collective states. Through correlating the double-quantum coherence and the zero-quantum coherence, signatures for coherence between collective states can be well isolated as side peaks and readily identified in the 2D spectrum. The experiment is implemented in a vapor of rubidium atoms in a collinear 2DCS setup. Good agreement with a theoretical simulation using density matrix confirms the essential role of the interatomic correlation effect in generating the side peak signals. This 2D spectrum technique paves a new avenue for studying the coherent coupling of highly excited states and many-body properties.

© 2022 Optica Publishing Group

Optical two-dimensional coherent spectroscopy of cold atoms

Danfu Liang, Lexter Savio Rodriguez, Haitao Zhou, Yifu Zhu, and Hebin Li
Opt. Lett. 47(24) 6452-6455 (2022)

Probing dipole–dipole interaction in a rubidium gas via double-quantum 2D spectroscopy

Feng Gao, Steven T. Cundiff, and Hebin Li
Opt. Lett. 41(13) 2954-2957 (2016)

Long range dipole-dipole interaction in low-density atomic vapors probed by double-quantum two-dimensional coherent spectroscopy

Shaogang Yu, Michael Titze, Yifu Zhu, Xiaojun Liu, and Hebin Li
Opt. Express 27(20) 28891-28901 (2019)

Observation of scalable and deterministic multi-atom Dicke states in an atomic vapor

Shaogang Yu, Michael Titze, Yifu Zhu, Xiaojun Liu, and Hebin Li
Opt. Lett. 44(11) 2795-2798 (2019)

Telecom-wavelength spectra of a Rydberg state in a hot vapor

Wenfang Li, Jinjin Du, Mark Lam, and Wenhui Li
Opt. Lett. 47(17) 4399-4402 (2022)