[en] Ultracold atoms can be manipulated using microfabricated devices known as atom chips. These have significant potential for applications in sensing, metrology, and quantum information processing. To date, the chips are loaded by transfer of atoms from an external macroscopic magnetooptical trap (MOT) into microscopic traps on the chip. This transfer involves a series of steps, which complicate the experimental procedure and lead to atom losses. In this paper, we present a design for integrating a MOT into a silicon wafer by combining a concave pyramidal mirror with a square wire loop. We describe how an array of such traps has been fabricated, and we present magnetic, thermal, and optical properties of the chip.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Lewis, Gareth Neil
Moktadir, Zakaria
Gollasch, Carsten O.
Kraft, Michaël ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
Pollock, Samuel
Ramirez-Martinez, Fernando
Ashmore, J. P.
Laliotis, A.
Trupke, Michael
Hinds, Edward A.
Language :
English
Title :
Fabrication of magnetooptical atom traps on a chip
E. A. Hinds and I. G. Hughes, "Magnetic atom optics: Mirrors, guides, traps, and chips for atoms," J. Phys. D, Appl. Phys., vol. 32, no. 18, pp. R119-R146, 1999.
R. Folman, P. Krüger, J. Schmiedmayer, J. Denschlag, and C. Henkel, "Microscopic atom optics: From wires to an atom chip," Adv. At. Mol. Opt. Phys., vol. 48, pp. 263-356, 2002.
A. Grabowski and T. Pfau, "A lattice of magneto-optical and magnetic traps for cold atoms," Eur. Phys. J., D At. Mol. Opt. Phys., vol. 22, no. 3, pp. 347-354, Mar. 2003.
J. Fortágh and C. Zimmermann, "Magnetic microtraps for ultracold atoms," Rev. Mod. Phys., vol. 79, no. 1, pp. 235-289, Jan. 2007.
S. Eriksson, M. Trupke, H. F. Powell, D. Sahagun, C. D. J. Sinclair, E. A. Curtis, B. E. Sauer, E. A. Hinds, Z. Moktadir, C. O. Gollasch, and M. Kraft, "Integrated optical components on atom chips," Eur. Phys. J., D At. Mol. Opt. Phys., vol. 35, no. 1, pp. 135-139, Aug. 2005.
W. Hansel, P. Hommelhoff, T. W. Hansch, and J. Reichel, "Bose-Einstein condensation on a microelectronic chip," Nature, vol. 413, no. 6855, pp. 498-501, Oct. 2001.
H. Ott, J. Fortagh, G. Schlotterbeck, A. Grossmann, and C. Zimmermann, "Bose-Einstein condensation in a surface microtrap," Phys. Rev. Lett., vol. 87, no. 23, p. 230 401, Dec. 2001.
C. D. J. Sinclair, E. A. Curtis, I. Llorente-Garcia, J. A. Retter, B. V. Hall, S. Eriksson, B. E. Sauer, and E. A. Hinds, "Bose-Einstein condensation on a permanent-magnet atom chip," Phys. Rev. A, Gen. Phys., vol. 72, no. 3, p. 031 603(R), Sep. 2005.
S. Knappe, P. D. D. Schwindt, V. Shah, L. Hollberg, J. Kitching, L. Liew, and J. Moreland, "A chip-scale atomic clock based on Rb-87 with improved frequency stability," Opt. Express, vol. 13, pp. 1249-1253, 2005.
Y. Shin, C. Sanner, G.-B. Jo, T. A. Pasquini, M. Saba, W. Ketterle, D. E. Pritchard, M. Vengalattore, and M. Prentiss, "Interference of Bose-Einstein condensates split with an atom chip," Phys. Rev. A, Gen. Phys., vol. 72, no. 2, p. 021 604(R), Aug. 2005.
T. Schumm, S. Hofferberth, L. M. Andersson, S. Wildermuth, S. Groth, I. Bar-Joseph, J. Schmiedmayer, and P. Krüger, "Matter-wave interferometry in a double well on an atom chip," Nat. Phys., vol. 1, no. 1, pp. 57-62, Oct. 2005.
M. Trupke, J. Metz, A. Beige, and E. A. Hinds, "Towards quantum computing with single atoms and optical cavities on atom chips," J. Mod. Opt., vol. 54, no. 11, pp. 1639-1655, Jul. 2007.
J. Schmiedmayer, R. Folman, and T. Calarco, "Quantum information processing with neutral atoms on an atom chip," J. Mod. Opt., vol. 49, no. 8, pp. 1375-1388, Jul. 2002.
M. Trupke, F. Ramirez-Martinez, E. A. Curtis, J. P. Ashmore, S. Eriksson, E. A. Hinds, Z. Moktadir, C. Gollasch, M. Kraft, G. V. Prakash, and J. J. Baumberg, "Pyramidal micromirrors for microsystems and atom chips," Appl. Phys. Lett., vol. 88, no. 7, p. 071 116, Feb. 2006.
K. I. Lee, J. A. Kim, H. R. Noh, and W. Jhe, "Single-beam atom trap in a pyramidal and conical hollow mirror," Opt. Lett., vol. 21, no. 15, pp. 1177-1179, Aug. 1996.
K. Lindquist,M. Stephens, and C. Wieman, "Experimental and theoretical study of the vapor-cell Zeeman optical trap," Phys. Rev. A, Gen. Phys., vol. 46, no. 7, pp. 4082-4090, Oct. 1992.
Z. Moktadir and H. Camon, "Monte Carlo simulation of anisotropic etching of silicon: Investigation of 〈111〉 surface properties," Model. Simul. Mater. Sci. Eng., vol. 5, no. 5, pp. 481-488, Sep. 1997.
E. Koukharenko, Z. Moktadir, M. Kraft, M. E. Abdelsalam, D. M. Bagnall, C. Vale, M. P. A. Jones, and E. A. Hinds, "Microfabrication of gold wires for atom guides," Sens. Actuators A, Phys., vol. 115, no. 2/3, pp. 600-607, Sep. 2004.
H. J. Metcalf and P. van der Straten, Laser Cooling and Trapping. New York: Springer-Verlag, 1999.
M. Trupke, J. Goldwin, B. Darquie, G. Dutier, S. Eriksson, J. Ashmore, and E. A. Hinds, "Atom detection and photon production in a scalable, open, optical microcavity," Phys. Rev. Lett., vol. 99, no. 6, p. 063 601, Aug. 2007.
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