Optical Two-dimensional Coherent Spectroscopy of Cold Atoms

Abstract

We report an experimental demonstration of optical 2DCS in cold atoms. The experiment integrates a collinear 2DCS setup with a magneto-optical trap (MOT), in which cold rubidium (Rb) atoms are prepared at a temperature of about 200 $\mu$K and a number density of $10^{10}$ cm${}^{-3}$. With a sequence of femtosecond laser pulses, we first obtained one-dimensional second- and fourth-order nonlinear signals and then acquired both one-quantum and zero-quantum 2D spectra of cold Rb atoms. The capability of performing optical 2DCS in cold atoms is an important step toward optical 2DCS study of many-body physics in cold atoms and ultimately in atom arrays and trapped ions. Optical 2DCS in cold atoms/molecules can also be a new avenue to probe chemical reaction dynamics in cold molecules.

5 pages, 4 figures

References in corpus (5)

• An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
• Demonstration of two-atom entanglement with ultrafast optical pulses
• Collective resonance of $D$ states in rubidium atoms probed by optical two-dimensional coherent spectroscopy
• Broadband Optical Two-Dimensional Coherent Spectroscopy of a Rubidium Atomic Vapor
• Two-dimensional electronic spectroscopy of an ultracold gas

Cited by in corpus (1)

• Two-dimensional electronic spectroscopy of an ultracold gas