| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
|
|
|
|
Production of $^{87}$Rb Bose–Einstein Condensate with a Simple Evaporative Cooling Method |
| Rehman Fazal1, Jia-Zhen Li1, Zhi-Wen Chen1, Yuan Qin1, Ya-Yi Lin1, Zuan-Xian Zhang1, Shan-Chao Zhang1**, Wei Huang1**, Hui Yan1, Shi-Liang Zhu1,2 |
1Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, GPETR Center for Quantum Precision Measurement and SPTE, South China Normal University, Guangzhou 510006
2National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093
|
|
| Cite this article: |
|
Rehman Fazal, Jia-Zhen Li, Zhi-Wen Chen et al 2020 Chin. Phys. Lett. 37 036701 |
|
|
|
|
Abstract A Bose–Einstein condensate with a large atom number is an important experimental platform for quantum simulation and quantum information research. An optical dipole trap is the a conventional way to hold the ultracold atoms, where an atomic cloud is evaporatively cooled down before reaching the Bose–Einstein condensate. A carefully designed trap depth controlling curve is typically required to realize the optimal evaporation cooling. We present and demonstrate a simple way to optimize the evaporation cooling in a crossed optical dipole trap. A polyline shape optical power control profile is easily obtained with our method, by which a pure Bose–Einstein condensate with atom number $1.73\times10^5 $ is produced. Theoretically, we numerically simulate the optimal evaporation cooling using the parameters of our apparatus based on a kinetic theory. Compared to the simulation results, our evaporation cooling shows a good performance. We believe that our simple method can be used to quickly realize evaporation cooling in optical dipole traps.
|
|
|
Received: 17 December 2019
Published: 22 February 2020
|
|
| PACS: |
67.85.Hj
|
(Bose-Einstein condensates in optical potentials)
|
| |
37.10.-x
|
(Atom, molecule, and ion cooling methods)
|
| |
64.70.fm
|
(Thermodynamics studies of evaporation and condensation)
|
|
|
| Fund: Supported by the National Key Research and Development Program of China (Grant Nos. 2016YFA0301803 and 2016YFA0302800), the Key-Area Research and Development Program of GuangDong Province (Grant No. 2019B030330001), the National Natural Science Foundation of China (Grant Nos. 61378012, 91636218, 11822403, 11804104, 11804105, 61875060 and U1801661), the Natural Science Foundation of Guangdong Province (Grant Nos. 2018A030313342 and 2018A0303130066), the Key Project of Science and Technology of Guangzhou (Grant No. 201804020055). |
|
|
|
| [1] | Grenier M, Mandel O, Esslinger T, Hänsch T W and Bloch I 2002 Nature 415 39 | | [2] | Léonard J, Morales A, Zupancic P, Esslinger T and Donner T 2017 Nature 543 87 | | [3] | Léonard J, Morales A, Zupancic P, Donner T and Esslinger T 2017 Science 358 1415 | | [4] | Steinke S K, Singh S, Tasgin M E, Meystre P, Schwab K C and Vengalattore M 2011 Phys. Rev. A 84 023841 | | [5] | Calarco T, Dorner U, Julienne P S, Williams C J and Zoller P 2004 Phys. Rev. A 70 012306 | | [6] | Byrnes T, Wen K and Yamamoto Y 2012 Phys. Rev. A 85 040306(R) | | [7] | Vinit A and Raman C 2017 Phys. Rev. A 95 011603 | | [8] | Rudolph J, Herr W, Grzeschik C, Sternke T, Grote A, Popp M, Becker D, Mntinga H, Ahlers H, Peters A, Lmmerzahl C, Sengstock K, Gaaloul N, Ertmer W and Rasel E M 2015 New J. Phys. 17 065001 | | [9] | Pyrkov A N and Byrnes T 2013 New J. Phys. 15 093019 | | [10] | Ketterle W and Van D N J 1996 Adv. At. Mol. Opt. Phys. 37 181 | | [11] | Mewes M O, Andrews M R, Druten N J V, Kurn D M, Durfee D S, Townsend C G and Ketterle W 1996 Phys. Rev. Lett. 77 988 | | [12] | Jin D S, Ensher J R, Matthews M R, Wieman C E and Cornell E A 1996 Phys. Rev. Lett. 77 420 | | [13] | Urvoy A, Vendeiro Z, Ramette J, Adiyatullin A and Vuletić V 2019 Phys. Rev. Lett. 122 203202 | | [14] | Colzi G, Fava E, Barbiero M, Mordini C, Lamporesi G and Ferrari G 2018 Phys. Rev. A 97 053625 | | [15] | Xie D Z, Wang D Y, Gou W, Bu W H and Yan B 2018 J. Opt. Soc. Am. B 35 500 | | [16] | Jacob D, Mimoun E, Sarlo L D, Weitz M, Dalibard J and Gerbier F 2011 New J. Phys. 13 065022 | | [17] | Zhang D W, Zhu Y Q, Zhao Y X, Yan H and Zhu S L 2018 Adv. Phys. 67 253 | | [18] | Lin Y J, Jiménez G K and Spielman I B 2011 Nature 471 83 | | [19] | Williams R A, LeBlanc L J, Jiménez G K, Beeler M C, Perry A R, Phillips W D and Spielman I B 2012 Science 335 314 | | [20] | Ji S C, Zhang J Y, Zhang L, Du Z D, Zheng W, Deng Y J, Zhai H, Chen S and Pan J W 2014 Nat. Phys. 10 314 | | [21] | Wu X, Zhang L, Sun W, Xu T X, Wang Z B, Ji C S, Deng J Y, Chen S, Liu J X and Pan J W 2016 Science 354 83 | | [22] | Clark L M, Feng L and Chin C 2016 Science 354 606 | | [23] | Sugawa S J, Salces C F, Perry A R, Yue Y C and Spielman I B 2018 Science 360 1429 | | [24] | Deng S J, Shi Z Y, Diao P P, Yu Q L, Zhai H, Qi R and Wu H B 2016 Science 353 371 | | [25] | Tang P J, Peng P, Li Z H, Chen X Z, Li X P and Zhou X J 2019 Phys. Rev. A 100 013618 | | [26] | Luo X Y, Zou Y Q, Wu L N, Liu Q, Han M F, Tey M K and You L 2017 Science 355 620 | | [27] | Chen L C, Wang P J, Meng Z M, Huang L H, Cai H, Wang D W, Zhu S Y and Zhang J 2018 Phys. Rev. Lett. 120 193601 | | [28] | Hu Z F, Liu C P, Liu J M and Wang Y Z 2018 Opt. Express 26 20122 | | [29] | Zhang D F, Gao T Y, Zou P, Kong L R, Li R Z, Shen X, Chen X L, Peng S G, Zhan M S, Pu H and Jiang K J 2019 Phys. Rev. Lett. 122 110402 | | [30] | Deng L, Hagley E W, Cao Q, Wang X R, Luo X Y, Wang R Q, Payne M G, Yang F, Zhou X J, Chen X Z and Zhan M S 2010 Phys. Rev. Lett. 105 220404 | | [31] | Dai H N, Yang B, Reingruber A, Xu X F, Jiang X, Chen Y A, Yuan Z S and Pan J W 2016 Nat. Phys. 12 783 | | [32] | Yang B, Chen Y Y, Zheng Y G, Sun H, Dai H N, Guan X W, Yuan Z S and Pan J W 2017 Phys. Rev. Lett. 119 165701 | | [33] | Yang S F, Xu Z T, Wang K, Li X F, Zhai Y Y and Chen X Z 2019 Chin. Phys. Lett. 36 080302 | | [34] | Nawaz K S, Mi C D, Chen L C, Wang P J and Zhang J 2019 Chin. Phys. Lett. 36 043201 | | [35] | Qi W, Liang M C, Zhang H, Wei Y D, Wang W W, Wang X J and Zhang X B 2019 Chin. Phys. Lett. 36 093701 | | [36] | Peng P, Huang L H, Li D H, Wang P J, Meng Z M and Zhang J 2018 Chin. Phys. Lett. 35 063201 | | [37] | Ma X B, Ye Z X, Xie L Y, Guo Z, You L and Tey M K 2019 Chin. Phys. Lett. 36 073401 | | [38] | Zhou J W, Li X X, Gao R, Qin W S, Jiang H H, Li T T and Xue J K 2019 Chin. Phys. Lett. 36 090302 | | [39] | Wei Y W, Kong C and Hai W H 2019 Chin. Phys. B 28 056701 | | [40] | Huang L H, Wang P J, Fu Z K and Zhang J 2014 Chin. Phys. B 23 013402 | | [41] | Liu C, Yang Z Y, Zhao L C, Yang W L and Yue R H 2013 Chin. Phys. Lett. 30 040304 | | [42] | Wang Y M and Liang J Q 2012 Chin. Phys. B 21 060305 | | [43] | Olson A J, Niffenegger R J and Chen Y P 2013 Phys. Rev. A 87 053613 | | [44] | Kinoshita T, Wenger T and Weiss D S 2005 Phys. Rev. A 71 011602 | | [45] | Lin Y J, Perry A R, Compton R L, Spielman I B and Porto J V 2009 Phys. Rev. A 79 063631 | | [46] | Roy R, Green A, Bowler R and Gupta S 2016 Phys. Rev. A 93 043403 | | [47] | Dunning A, Gregory R, Bateman J, Himsworth M and Freegarde T 2015 Phys. Rev. Lett. 115 073004 | | [48] | Schemmer M and Bouchoule I 2018 Phys. Rev. Lett. 121 200401 | | [49] | Hu J, Urvoy A, Vendeiro Z, Crépel V, Chen W and Vuletić V 2017 Science 358 1078 | | [50] | Jiang J, Zhao L, Webb M, Jiang N, Yang H and Liu Y 2013 Phys. Rev. A 88 033620 | | [51] | Song B, He C D, Zhang S C, Hajiyev E, Huang W, Liu X J and Jo G B 2016 Phys. Rev. A 94 061604(R) | | [52] | Granade S R, Gehm M E, {O'}Hara K M and Thomas J E 2002 Phys. Rev. Lett. 88 120405 | | [53] | Hansen A H, Khramov A Y, Dowd W H, Jamison A O, Plotkin S B, Roy R J and Gupta S 2013 Phys. Rev. A 87 013615 | | [54] | Duan Y F, Jiang B N, Sun J F, Liu K K, Xu Z and Wang Y Z 2013 Chin. Phys. B 22 056701 | | [55] | Hung C L, Zhang X, Gemelke N and Chin C 2008 Phys. Rev. A 78 011604 | | [56] | Clément J F, Brantut J P, Robert S V M, Nyman R A, Aspect A, Bourdel T and Bouyer P 2009 Phys. Rev. A 79 061406 | | [57] | Arnold K and Barrett M 2011 Opt. Commun. 284 3288 | | [58] | Weber T, Herbig J, Mark M, Nägerl H C and Grimm R 2003 Science 299 232 | | [59] | Luiten O J, Reynolds M W and Walraven J T M 1996 Phys. Rev. A 53 381 | | [60] | {O'}Hara K M, Gehm M E, Granade S R and Thomas J E 2001 Phys. Rev. A 64 051403(R) | | [61] | Williams M J and Fertig C 2015 Phys. Rev. A 91 023432 | | [62] | Yamashita M, Koashi M, Mukai T, Mitsunaga M, Imoto N and Mukai T 2003 Phys. Rev. A 67 023601 | | [63] | Wigley P B, Everitt P J, Hengel A V D, Bastian J W, Sooriyabandara M A, McDonald G D, Hardman K S, Quinlivan C D, Manju P, Kuhn C N N, Petersen I R, Luiten A N, Hope J J, Robins N P and Hush M R 2016 Sci. Rep. 6 25890 | | [64] | Stellmer S, Tey M K, Huang B, Grimm R and Schreck F 2009 Phys. Rev. Lett. 103 200401 | | [65] | Mishra H P, Flores A S, Vassen W and Knoop S 2015 Eur. Phys. J. D 69 52 | | [66] | Burt E A, Ghrist R W, Myatt C J, Holland M J, Cornell E A and Wieman C E 1997 Phys. Rev. Lett. 79 337 | | [67] | Kempen E G M V, Kokkelmans S J J M F, Heinzen D J and Verhaar B J 2002 Phys. Rev. Lett. 88 093201 |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
