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

doi:10.1088/1674-1056/23/1/013402

中国物理B ›› 2014, Vol. 23 ›› Issue (1): 13402-013402.doi: 10.1088/1674-1056/23/1/013402

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

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

黄良辉, 王鹏军, 付正坤, 张靖

State Key Laboratory of Quantum Optics and Quantum Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

收稿日期:2013-06-30 修回日期:2013-08-06 出版日期:2013-11-12 发布日期:2013-11-12
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2011CB921601), the National Natural Science Foundation of China (Grant No. 11234008), the Project for Excellent Research Team of China (Grant No. 61121064), and the Doctoral Program Foundation of Ministry of Education, China (Grant No. 20111401130001).

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

Huang Liang-Hui (黄良辉), Wang Peng-Jun (王鹏军), Fu Zheng-Kun (付正坤), Zhang Jing (张靖)

State Key Laboratory of Quantum Optics and Quantum Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

Received:2013-06-30 Revised:2013-08-06 Online:2013-11-12 Published:2013-11-12
Contact: Zhang Jing E-mail:jzhang74@aliyun.com
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2011CB921601), the National Natural Science Foundation of China (Grant No. 11234008), the Project for Excellent Research Team of China (Grant No. 61121064), and the Doctoral Program Foundation of Ministry of Education, China (Grant No. 20111401130001).

摘要/Abstract

摘要： We create weakly bound Feshbach molecules in ultracold Fermi gas ⁴⁰K 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.

关键词: Feshbach resonance, scattering length, weakly bound molecules

Abstract: We create weakly bound Feshbach molecules in ultracold Fermi gas ⁴⁰K 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.

Key words: Feshbach resonance, scattering length, weakly bound molecules

中图分类号: (Interatomic potentials and forces)

34.20.Cf

67.85.Hj (Bose-Einstein condensates in optical potentials) 03.75.Lm (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

黄良辉, 王鹏军, 付正坤, 张靖. Radio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gas[J]. 中国物理B, 2014, 23(1): 13402-013402.

Huang Liang-Hui (黄良辉), Wang Peng-Jun (王鹏军), Fu Zheng-Kun (付正坤), Zhang Jing (张靖). Radio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gas[J]. Chin. Phys. B, 2014, 23(1): 13402-013402.

参考文献 29

[1]	Inouye S, Andrews M R, Stenger J, Miesner H J, Stamper-Kurn D M and Ketterle W 1998 Nature 392 151
[2]	Courteille Ph, Freeland R S, Heinzen D J, van Abeelen F A and Verhaar B J 1998 Phys. Rev. Lett. 81 69
[3]	Köhler T, Góral K and Julienne P S 2006 Rev. Mod. Phys. 78 1311
[4]	Chin C, Grimm R, Julienne P and Tiesinga 2010 Rev. Mod. Phys. 82 1225
[5]	Regal C A, Ticknor C, Bohn J L and Jin D S 2003 Nature 424 47
[6]	Regal C A, Greiner M and Jin D S 2004 Phys. Rev. Lett. 92 083201
[7]	Greiner M, Regal C A and Jin D S 2005 Phys. Rev. Lett. 94 070403
[8]	Szymańska M H, Góral K, Köhler T and Burnett K 2005 Phy. Rev. A 72 013610
[9]	Stewart J T, Gaebler J P and Jin D S 2008 Nature 454 744
[10]	Gaebler J P, Stewart J T, Drake T E, Jin D S, Perali A, Pieri P and Strinati C 2010 Nat. Phys. 569 1709
[11]	Zwierlein M W, Stan C A, Schunck C H, Raupach S M F, Kerman A J and Ketterle W 2004 Phys. Rev. Lett. 92 120403
[12]	Damascelli A 2004 Phys. Scr. T109 61
[13]	Greiner M, Regal C A and Jin D S 2005 Phys. Rev. Lett. 94 070403
[14]	Dao T L, Georges A, Dalibard J, Scalomon C and Carusotto I 2007 Phys. Rev. Lett. 98 240402
[15]	Dao T L, Carusotto I and Georges A 2009 Phys. Rev. A 80 023627
[16]	Wang P J, Fu Z K, Huang L H and Zhang J 2012 Phys. Rev. A 85 053626
[17]	Fu Z K, Wang P J, Huang L H, Meng Z M and Zhang J 2012 Phys. Rev. A 86 033607
[18]	Wei D, Xiong D Z, Chen H X and Zhang J 2007 Chin. Phys. Lett. 24 679
[19]	Wang P J, Xiong D Z, Fu Z K and Zhang J 2011 Chin. Phys. B 20 016701
[20]	Wei D, Xiong D Z, Chen H X, Wang P J, Guo L and Zhang J 2007 Chin. Phys. Lett. 24 1541
[21]	Xiong D Z, Chen H X, Wang P J, Yu X D, Gao F and Zhang J 2008 Chin. Phys. Lett. 25 843
[22]	Xiong D Z, Wang P J, Fu Z K and Zhang J 2010 Opt. Express 18 1649
[23]	Wang P J, Chen H X, Xiong D Z, Yu X D, Gao F and Zhang J 2008 Acta Phys. Sin. 57 4840 (in Chinese)
[24]	Wang P J, Fu Z K, Chai S J and Zhang J 2011 Chin. Phy. B 20 103401
[25]	Ludewig A 2012 Feshbach Resonance in 40K (Ph.D. disseration) (Amsterdam: Universiteit van Amsterdam)
[26]	Daniel A 2010 Rubidum 87 D Line Data
[27]	Schunck C H, Shin Y I, Schirotzek A and Ketterle W 2008 Nature 454 739
[28]	Chin C and Julienne P S 2005 Phys. Rev. A 71 012713
[29]	Zürn G, Lompe T, Wenz A N, Jochim S, Julienne P S and Hutson J M 2013 Phys. Rev. Lett. 110 135301

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

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

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 29

相关文章 15

Metrics

本文评价

推荐阅读 0

[1]	Rong Zhang(张蓉), Yong-Chang Han(韩永昌), Shu-Lin Cong(丛书林), and Maksim B Shundalau. The influence of collision energy on magnetically tuned ⁶Li-⁶Li Feshbach resonance[J]. 中国物理B, 2022, 31(6): 63402-063402.
[2]	刘亚雄, 赵博. Theoretical analysis of the coupling between Feshbach states and hyperfine excited states in the creation of ²³Na⁴⁰K molecule [J]. 中国物理B, 2020, 29(2): 23103-023103.
[3]	姚睿, 孙震东, 周蜀渝, 王颖, 王育竹. A combined system for generating a uniform magnetic field and its application in the investigation of Efimov physics[J]. 中国物理B, 2018, 27(1): 16703-016703.
[4]	程冬, 李亚, 凤尔银, 黄武英. Electric-field-modified Feshbach resonances in ultracold atom-molecule collision[J]. 中国物理B, 2017, 26(1): 13402-013402.
[5]	李健, 刘勇, 黄寅, 丛书林. Two-color laser modulation of magnetic Feshbach resonances[J]. 中国物理B, 2015, 24(8): 80308-080308.
[6]	张计才, 王克栋, 刘玉芳, 孙金锋. Elastic scattering of sodium and cesium atoms at ultracold temperatures[J]. 中国物理B, 2011, 20(9): 93401-093401.
[7]	张计才, 孙金锋, 刘玉芳. Calculation of scattering parameters for ultracold ⁶Li–⁷Li elastic collisions[J]. 中国物理B, 2011, 20(2): 23401-023401.
[8]	王鹏军, 付正坤, 柴世杰, 张靖. Feshbach resonances in an ultracold mixture of ⁸⁷Rb and ⁴⁰K[J]. 中国物理B, 2011, 20(10): 103401-103401.
[9]	张计才, 张莹, 杜丙阁, 孙金锋. Calculation of the elastic collision properties of Na and Li atoms at ultracold temperature[J]. 中国物理B, 2009, 18(4): 1486-1490.
[10]	孙金锋, 杜丙阁, 张计才, 李伟, 朱遵略. Scattering properties of the ultracold ¹³³Cs₂ triplet state[J]. 中国物理B, 2009, 18(3): 1019-1024.
[11]	何章明, 王登龙, 张蔚曦, 王凤姣, 丁建文. Controlling the amplitude of soliton in agrowing Bose--Einstein condensate by means of Feshbach resonance[J]. 中国物理B, 2008, 17(10): 3640-3643.
[12]	施德恒, 孙金锋, 朱遵略, 刘玉芳. Ab initio calculations on the a³∑⁺_u state properties of dimer ⁷Li₂[J]. 中国物理B, 2007, 16(9): 2701-2708.
[13]	胡秋波, 王晓飞, 孙金锋, 朱遵略. Calculation of the elastic scattering properties for cold and ultracold ³⁹K atoms in a triplet state[J]. 中国物理B, 2007, 16(8): 2367-2370.
[14]	孙金锋, 张计才, 王杰敏. Accurate calculation of the elastic scattering properties of ⁷Li atoms at ultralow temperatures[J]. 中国物理B, 2006, 15(3): 531-535.
[15]	李画眉. Dynamics of solitons in Bose-Einstein condensate with time-dependent atomic scattering length[J]. 中国物理B, 2006, 15(10): 2216-2222.