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Radio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gasRadio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gasRadio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gas

黄良辉, 王鹏军, 付正坤 +1 more

We create weakly bound Feshbach molecules in ultracold Fermi gas 4~K by sweeping a magnetic field across a broad Feshbach resonance point 202.2 G with a rate of 20 ms/G and perform the dissociation process using radio-frequency （RF） technology. From RF spectroscopy, we obtain the binding energy of the weakly bound molecules in the vicinity of Feshbach resonance. Our measurement also shows that the number of atoms generated from the dissociation process is different at various magnetic fields with the same RF amplitude, which gives us a deeper understanding of weakly bound Feshbach molecules.We create weakly bound Feshbach molecules in ultracold Fermi gas 4~K by sweeping a magnetic field across a broad Feshbach resonance point 202.2 G with a rate of 20 ms/G and perform the dissociation process using radio-frequency （RF） technology. From RF spectroscopy, we obtain the binding energy of the weakly bound molecules in the vicinity of Feshbach resonance. Our measurement also shows that the number of atoms generated from the dissociation process is different at various magnetic fields with the same RF amplitude, which gives us a deeper understanding of weakly bound Feshbach molecules.

中国物理B：英文版Jan 1, 20140 citations

Magnetic-field Control of the Ultracold Chemistry of Simple Molecules

Brandon Ruzic, Jisha Hazra, N. Balakrishnan +1 more

Bulletin of the American Physical SocietyMay 25, 20160 citations

Radio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gas

Lianghui Huang, Pengjun Wang, Zhengkun Fu +1 more

We create weakly bound Feshbach molecules in ultracold Fermi gas 40 K by sweeping a magnetic field across a broad Feshbach resonance point 202.2 G with a rate of 20 ms/G and perform the dissociation process using radio-frequency (RF) technology. From RF spectroscopy, we obtain the binding energy of the weakly bound molecules in the vicinity of Feshbach resonance. Our measurement also shows that the number of atoms generated from the dissociation process is different at various magnetic fields with the same RF amplitude, which gives us a deeper understanding of weakly bound Feshbach molecules.We create weakly bound Feshbach molecules in ultracold Fermi gas 40 K by sweeping a magnetic field across a broad Feshbach resonance point 202.2 G with a rate of 20 ms/G and perform the dissociation process using radio-frequency (RF) technology. From RF spectroscopy, we obtain the binding energy of the weakly bound molecules in the vicinity of Feshbach resonance. Our measurement also shows that the number of atoms generated from the dissociation process is different at various magnetic fields with the same RF amplitude, which gives us a deeper understanding of weakly bound Feshbach molecules.

Chinese Physics BJan 1, 20146 citations

Theory of Ultracold Feshbach Molecules

Thomas M. Hanna, Hugo E. L. Martay, Thorsten Köhler

Jun 25, 20091 citation

Theory of Ultracold Feshbach Molecules

Thorsten Köhler, Thomas M. Hanna, Hugo E. L. Martay

CRC Press eBooksJun 25, 20090 citations

Observation of a threshold behavior in an ultracold endothermic atom-exchange process involving Feshbach molecules

Ya-Xiong Liu, Jue Nan, De-Chao Zhang +5 more

We report on the investigation of endothermic and nearly thermoneutral atom-exchange collisions in an ultracold atom-dimer mixture. By developing an indirect preparation method based on a molecular bound-bound transition, we are able to directly observe an endothermic collision with a tunable energy threshold and study the state-to-state collision dynamics. The collision rate coefficients show a striking threshold phenomenon. The influence of the reverse process on the collision dynamics is observed for the endothermic and nearly thermoneutral collisions. We carry out zero-range quantum-mechanical scattering calculations to obtain the collision rate coefficients, and the three-body parameter is determined by comparison with the experiments. The observed endothermic and nearly thermoneutral collisions may be employed to implement quantum simulation of the Kondo effect with ultracold molecules.We report on the investigation of endothermic and nearly thermoneutral atom-exchange collisions in an ultracold atom-dimer mixture. By developing an indirect preparation method based on a molecular bound-bound transition, we are able to directly observe an endothermic collision with a tunable energy threshold and study the state-to-state collision dynamics. The collision rate coefficients show a striking threshold phenomenon. The influence of the reverse process on the collision dynamics is observed for the endothermic and nearly thermoneutral collisions. We carry out zero-range quantum-mechanical scattering calculations to obtain the collision rate coefficients, and the three-body parameter is determined by comparison with the experiments. The observed endothermic and nearly thermoneutral collisions may be employed to implement quantum simulation of the Kondo effect with ultracold molecules.

arXiv:1708.08610Physical Review ASep 16, 20199 citations

Magnetically tunable atom-exchange process involving ultracold weakly bound Feshbach molecules

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