Experimental Improvement of Signal of a Single Laser-Cooled Trapped 40Ca+ Ion
SHU Hua-Lin 1,2,3, GUO Bin 1,2,3, GUAN Hua 1,2,3, LIU Qu 1,2,3, HUANG Xue-Ren 1,2, GAO Ke-Lin 1,2
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 4300713Graduate School of the Chinese Academy of Science, Beijing 100049
Experimental Improvement of Signal of a Single Laser-Cooled Trapped 40Ca+ Ion
SHU Hua-Lin 1,2,3;GUO Bin 1,2,3;GUAN Hua 1,2,3;LIU Qu 1,2,3;HUANG Xue-Ren 1,2;GAO Ke-Lin 1,2
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 4300713Graduate School of the Chinese Academy of Science, Beijing 100049
摘要A single 40Ca+ ion is loaded in a miniature Paul trap and the probability of directly loading a single ion is above 50%. The signal-to-noise ratio and the storage time for a single ion have been improved by minimizing the ion micromotion and locking a 397nm cooling laser to a Fabry--Perot interferometer and optogalvanic signal. From the fluorescence spectrum, the ion temperature is estimated to be about 5mK.
Abstract：A single 40Ca+ ion is loaded in a miniature Paul trap and the probability of directly loading a single ion is above 50%. The signal-to-noise ratio and the storage time for a single ion have been improved by minimizing the ion micromotion and locking a 397nm cooling laser to a Fabry--Perot interferometer and optogalvanic signal. From the fluorescence spectrum, the ion temperature is estimated to be about 5mK.
SHU Hua-Lin;;GUO Bin;;GUAN Hua;;LIU Qu;;HUANG Xue-Ren;GAO Ke-Lin;. Experimental Improvement of Signal of a Single Laser-Cooled Trapped 40Ca+ Ion[J]. 中国物理快报, 2007, 24(5): 1217-1219.
SHU Hua-Lin, , GUO Bin, , GUAN Hua, , LIU Qu, , HUANG Xue-Ren, GAO Ke-Lin,. Experimental Improvement of Signal of a Single Laser-Cooled Trapped 40Ca+ Ion. Chin. Phys. Lett., 2007, 24(5): 1217-1219.
[1] Cirac J I and Zoller P 1995 Phys. Rev. Lett. 74 4091 [2] Monroe C et al 1995 Phys. Rev. Lett. 75 4714 [3] Steane A 1997 Appl. Phys. B 64 623 [4] James L V 1998 Appl. Phys. B 66 181 [5] Roos C F et al 2000 Phys. Rev. Lett. 85 5547 [6] Gulde S et al 2003 Nature 421 48 [7] Roos C F et al 2004 Science 304 1478 [8] Diedrich F 1987 Phys. Rev. Lett. 58 203 [9] N\"aerl H C et al 2000 Phys. Rev. A 61 23 405-1 [10] Rafac R J et al 2000 Phys. Rev. Lett. 85 2462 [11] Diddams S A et al 2001 Science 293 825 [12] Bergquist J C et al 1986 Phys. Rev. Lett. 57 1699 [13] Urabe S et al 1993 Appl. Phys. B 57 367 [14] Ritter G 1997 J. Phys. B 30 L141 [15] Barton P A et al 2000 Phys. Rev. A 62 032503 [16] Hollberg L et al 2001 IEEE J. Quantum. Electron. 37 1502 [17] Knoop M et al 2004 Eur. Phys. J. D 29 163 [18] Ma L S et al 2004 Science 303 (5665) 1843 [19] Margolis H S et al 2004 Science 306 1355 [20] Toyoda K et al 2001 Opt. Lett. 26 1897 [21] Lancaster G P T et al 2003 Appl. Phys. B 76 805 [22] Guan H et al 2007 Opt. Commun. (submitted) [23] SHU H L et al 2005 Chin. Phys. Lett. 22 1641 [24] Dehmelt H et al 1975 Bull. Am. Phys. Soc. 20 60 [25] Bergquist J C 1987 Phys. Rev. A 36 428 [26] Taylor P 1996 PhD thesis (Oxford University) [27] Roos C F 2000 PhD thesis (University of Innsbruck)
2007, Vol. 24 
