| ATOMIC AND MOLECULAR PHYSICS |
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Experimental Observation of Spin-Exchange in Ultracold Fermi Gases |
| Peng Peng1,2, Liang-Hui Huang1,2**, Dong-Hao Li1,2, Zeng-Ming Meng1,2, Peng-Jun Wang1,2, Jing Zhang1** |
1State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-electronics, Shanxi University, Taiyuan 030006
2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006
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| Cite this article: |
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Peng Peng, Liang-Hui Huang, Dong-Hao Li et al 2018 Chin. Phys. Lett. 35 033401 |
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Abstract We experimentally study the spin exchange collision in ultracold $^{40}$K Fermi gases. The quadratic Zeeman shift, trap potential and temperature of atomic cloud will influence on the spin changing dynamics. Dependences of the spin components populations on the external bias magnetic field, the optical trap depth and the temperature of atomic cloud are experimentally investigated. The spin exchange from the initial states to the final state are observed for different initial states. This work shows an interesting process of reaching equilibrium by redistribution among the spin states with the spin exchange collision in an ultracold large-spin Fermi gas.
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Received: 06 November 2017
Published: 25 February 2018
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| PACS: |
34.20.Cf
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(Interatomic potentials and forces)
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67.85.Hj
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(Bose-Einstein condensates in optical potentials)
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03.75.Lm
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(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
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| Fund: Supported by the National Key Research and Development Program of China under Grant Nos 2016YFA0301600 and 2016YFA0301602, the National Natural Science Foundation of China under Grant Nos 11234008, 11474188 and 11704234, and the Fund for Shanxi '1331 Project' Key Subjects Construction. |
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| [1] | Bloch I, Dalibard J and Zwerger W 2008 Rev. Mod. Phys. 80 885 | | [2] | Chin C, Grimm R, Julienne P and Tiesinga E 2010 Rev. Mod. Phys. 82 1225 | | [3] | Stamper-Kurn D M and Ueda M 2013 Rev. Mod. Phys. 85 1191 | | [4] | Black A T, Gomez E, Turner L D, Jung S and Let P D 2007 Phys. Rev. Lett. 99 070403 | | [5] | Weiner J, Bagnato V S, Zilio S and Julienne P S 1999 Rev. Mod. Phys. 71 463 | | [6] | Estève J, Gross C, Weller A, Giovanazzi S and Oberthaler M K 2008 Nature 455 1216 | | [7] | Gross C, Zibold T, Nicklas E, Estève J and Oberthaler M K 2010 Nature 464 1165 | | [8] | Riedel M F, Böhi P, Li Y, Hänsch T W, Sinatra A and Treutlein P 2010 Nature 464 1170 | | [9] | Gross C, Strobel H, Nicklas E, Zibold T, Bar-Gill N, Kurizki G and Oberthaler M K 2011 Nature 480 219 | | [10] | Zhang Z and Duan L M 2013 Phys. Rev. Lett. 111 180401 | | [11] | Luo X Y, Zou Y Q, Wu L N, Liu Q, Han M F, Tey M K and You L 2017 Science 355 620 | | [12] | Pechkis H K, Wrubel J P, Schwettmann A, Griffin P F, Barnett R, Tiesinga E and Lett P D 2013 Phys. Rev. Lett. 111 025301 | | [13] | Widera A, Gerbier F, Foelling S, Gericke T, Mandel O and Bloch I 2005 Phys. Rev. Lett. 95 190405 | | [14] | Struck J, Ölschlager C, Le Targat R, Soltan-Panahi P, Eckardt A, Lewenstein M, Windpassinger P and Sengstock K 2011 Science 333 996 | | [15] | Simon J, Bakr W S, Ma R, Eric Tai M, Preiss P M and Greiner M 2011 Nature 472 307 | | [16] | Krauser J S, Heinze J, Fläschner N, Götze S, Jürgensen O, Lühmann D S, Becker C and Sengstock K 2012 Nat. Phys. 8 813 | | [17] | Krauser J S, Ebling U, Fläschner N, Heinze J, Sengstock K, Lewenstein M, Eckardt A and Becker C 2014 Science 343 157 | | [18] | Ebling U, Krauser J S, Fläschner N, Sengstock K, Becker C, Lewenstein M and Eckardt A 2014 Phys. Rev. X 4 021011 | | [19] | Dong Y and Pu H 2013 Phys. Rev. A 87 043610 | | [20] | Wei D, Xiong D Z, Chen H X and Zhang J 2007 Chin. Phys. Lett. 24 679 | | [21] | Wei D, Xiong D Z, Chen H X, Wang P J, Guo L and Zhang J 2007 Chin. Phys. Lett. 24 1541 | | [22] | Xiong D Z, Chen H X, Wang P J, Yu X D, Gao F and Zhang J 2008 Chin. Phys. Lett. 25 843 | | [23] | Chai S J, Wang P J, Fu Z K, Huang L H and Zhang J 2012 Acta Sin. Quantum Opt. 18 171 | | [24] | Huang L H, Meng Z M, Wang P J, Peng P, Zhang S L, Chen L C, Li D H, Zhou Q and Zhang J 2016 Nat. Phys. 12 540 |
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