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arXiv · 1208.4718

Momentum-resolved Raman spectroscopy of bound molecules in ultracold Fermi gas

Zhengkun Fu·Pengjun Wang·Lianghui Huang·Zengming Meng·Jing Zhang
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Abstract

The binding energy of Feshbach molecules from a two component Fermi gas of $^{40}$K atoms has been experimentally measured with the momentum-resolved Raman spectroscopy. Comparing with the radio-frequency spectroscopy, in the present experiment the signal of unpaired (free atoms) and the bound molecules can be directly observed and the binding energy can be simultaneously determined in a single running experiment. The energy-momentum dispersion spectra of the strongly interacting ultracold Fermi gas in BEC side are also measured and reconstructed. The present experimental technology of the momentum-resolved Raman spectroscopy can be easily extended to perform spatially momentum-resolved Raman spectroscopy and to obtain the response spectra of a homogeneous system in the local density approximation.

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Zhengkun Fu, Pengjun Wang, Lianghui Huang, Zengming Meng, Jing Zhang. 2012-08-23. Momentum-resolved Raman spectroscopy of bound molecules in ultracold Fermi gas. https://doi.org/10.1103/physreva.86.033607

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