Preliminary frequency measurement of the electric quadrupole transition in a single laser-cooled ⁴⁰Ca⁺ ion

Abstract

The trapping and laser cooling of ⁴⁰Ca⁺ ion on the way toward optical frequency standards have been developed. A single ⁴⁰Ca⁺ ion is trapped in the miniature Paul trap and laser cooled by two frequency-stabilized diode lasers. A commercial Ti:Sapphire laser system at 729 nm is referenced to a high-finesse cavity to meet the requirements of ultra narrow linewidth of the 4s²S_1/2-3d²D_5/2 electric quadrupole transition. Its center frequency is preliminarily measured to be 411 042 129 686.1 (2.6) kHz. The attempt to finally lock the 729-nm laser system to atomic transition is made. Further work to improve the accuracy of measurement and the stabilization of system locking is in consideration and preparation.

Keywords

ion trap / optical frequency standard / laser stabilization / laser cooling

References

[1] S. A. Diddams, J. C. Bergquist, S. R. Jefferts, and C. W. Oates, Science, 2004, 306: 1318

[2] H. G. Dehmelt, IEEE Trans. Instrum. Meas., 1982, 31: 83

[3] R. J. Rafac, B. C. Young, J. A. Beall, W. M. Itano, D. J. Wineland, and J. C. Bergquist, Phys. Rev. Lett., 2000, 85: 2462

[4] S. A. Diddams, Th. Udem, J. C. Bergquist, E. A. Curtis, R. E. Drullinger, L. Hollberg, W. M. Itano, W. D. Lee, C. W. Oates, K. R. Vogel, and D. J. Wineland, Science, 2001, 293: 825

[5] P. J. Blythe, S. A. Webster, H. S. Margolis, S. N. Lea, G. Huang, S.-K. Choi, W. R. C. Rowley, P. Gill, and R. S. Windeler, Phys. Rev. A, 2003, 67: 020501

[6] J. Stenger, C. Tamm, N. Haverkamp, S. Weyers, and H. R. Telle, Opt. Lett., 2001, 26: 1589

[7] J. von Zanthier, Th. Becker, M. Eichenseer, A. Yu. Nevsky, Ch. Schwedes, E. Peik, H. Walther, R. Holzwarth, J. Reichert, Th. Udem, T. W. Hänsch, P. V. Pokasov, M. N. Skvortsov, and S. N. Bagayev, Opt. Lett., 2000, 25: 1729

[8] H. S. Margolis, G. P. Barwood, G. Huang, H. A. Klein, S. N. Lea, K. Szymaniec and P. Gill, Science, 2004, 306: 1355

[9] T. Rosenband, P. O. Schmidt, D. B. Hume, W. M. Itano, T. M. Fortier, J. E. Stalnaker, K. Kim, S. A. Diddams, J. C. J. Koelemeij, J. C. Bergquist, and D. J. Wineland, Phys. Rev. Lett., 2007, 98: 220801

[10] K. Matsubara, K. Hayasaka, Y. Li, H. Ito, S. Nagano, M. Kajita, and M. Hosokawa, Appl. Phys. Express, 2008, 1: 067011

[11] K. J. Siemsen, A. A. Madej, and B. G. Whitford, IEEE J. Quantum Electron., 1995, 31: 1764

[12] T. Rosenband, D. B. Hume, P. O. Schmidt, C. W. Chou, A. Brusch, L. Lorini, W.H. Oskay, R. E. Drullinger, T.M. Fortier, J. E. Stalnaker, S. A. Diddams, W. C. Swann, N. R. Newbury, W. M. Itano, D. J. Wineland, and J. C. Bergquist, Science, 2008, 319: 1808

[13] C. Champenois, M. Houssin, C. Lisowski, M. Knoop, M. Vedel, and F. Vedel, Phys. Lett. A, 2004, 331: 298

[14] M. Kajita, Y. Li, K. Matsubara, K. Hayasaka, and M. Hosokawa, Phys. Rev. A, 2005, 72: 043404

[15] F. Schmidt-Kaler, H. Häffner, M. Riebe, S. Gulde, G. P. T. Lancaster, T. Deuschle, C. Becher, C. F. Roos, J. Eschner, and R. Blatt, Nature, 2003, 422: 408

[16] M. Chwalla, J. Benhelm, K. Kim, G. Kirchmair, T. Monz, M. Riebe, P. Schindler, A. S. Villar, W. Hänsel, C. F. Roos, R. Blatt, M. Abgrall, G. Santarelli, G. D. Rovera, and Ph. Laurent, Phys. Rev. Lett., 2009, 102: 023002

[17] H.-L. Shu, H. Guan, X.-R. Huang, J.-M. Li, and K.-L. Gao, Chin. Phys. Lett., 2005, 22: 1641

[18] H.-L. Shu, B. Guo, H. Guan, Q. Liu, X.-R. Huang, and K.-L. Gao, Chin. Phys. Lett., 2007, 24: 1217

[19] H. Guan, B. Guo. G. L. Huang, H.-L. Shu, X.-R. Huang, and K.-L. Gao, Opt. Commun., 2007, 274: 182

[20] B. G. Lindsay, K. A. Smith, and F. B. Dunning, Rev. Sci. Instrum., 1991, 62: 1656

[21] K. Matsubara, S. Uetake, H. Ito, Y. Li, K. Hayasaka, and M. Hosokawa, Jpn. J. Appl. Phys., 2005, 44: 229

[22] D. J. Berkeland, J. D. Miller, J. C. Bergquist, W. M. Itano, and D. J. Wineland, J. Appl. Phys., 1998, 83: 5025

[23] V. P. Kaftandjian, C. Delsart, and J. C. Keller, Phys. Rev. A, 1981, 23: 1365

[24] R. D. Cowan, The Theory of Atomic Structure and Spectra, California Univ. Press. Berkeley, 1981: 446

[25] W. Zhang, Y. Y. Zhao, H. N. Han, Q, Du, Z. Y. Wei, B. Guo, Q. Liu, H. Guan, X. R. Huang, and K. L. Gao. Measurement of 729nm optical frequency with a novel frequency comb toward ⁴⁰Ca⁺ 4s²S_1/2–3d²D_5/2 clock transition (in preparing)

[26] G. Barwood, K. Gao, P. Gill, G. Huang, and H. A. Klein, IEEE Trans. Instrum. Meas., 2001, 50: 543

[27] J. E. Bernard, A. A. Madej, L. Marmet, B. G. Whitford, K. J. Siemsen, and S. Cundy, Phys. Rev. Lett., 1999, 82: 3228

RIGHTS & PERMISSIONS

Higher Education Press and Springer-Verlag Berlin Heidelberg