Cryogenic ion trapping systems with surface-electrode traps.

We present two simple cryogenic rf ion trap systems in which cryogenic temperatures and ultra high vacuum pressures can be reached in as little as 12 h. The ion traps are operated either in a liquid helium bath cryostat or in a low vibration closed cycle cryostat. The fast turn around time and availability of buffer gas cooling made the systems ideal for testing surface-electrode ion traps. The vibration amplitude of the closed cycled cryostat was found to be below 106 nm. We evaluated the systems by loading surface-electrode ion traps with (88)Sr(+) ions using laser ablation, which is compatible with the cryogenic environment. Using Doppler cooling we observed small ion crystals in which optically resolved ions have a trapped lifetime over 2500 min.

[1]  C. Monroe,et al.  Experimental Issues in Coherent Quantum-State Manipulation of Trapped Atomic Ions , 1997, Journal of research of the National Institute of Standards and Technology.

[2]  Dana Joy Berkeland,et al.  Linear Paul trap for strontium ions , 2002 .

[3]  David Leibrandt,et al.  Suppression of heating rates in cryogenic surface-electrode ion traps. , 2007, Physical review letters.

[4]  Bernard Yurke,et al.  Modeling ion trap thermal noise decoherence , 2007, Quantum Inf. Comput..

[5]  V. Kwong.  COOLING AND TRAPPING OF LASER INDUCED MULTIPLY CHARGED IONS OF MOLYBDENUM , 1989 .

[6]  Phillips,et al.  Special relativity and the single antiproton: Fortyfold improved comparison of p-bar and p charge-to-mass ratios. , 1995, Physical review letters.

[7]  David J. Wineland,et al.  Cryogenic linear ion trap for accurate spectroscopy , 1996 .

[8]  P. H. Hemberger,et al.  LASER ABLATION ION TRAP MASS SPECTROMETRY : STORAGE FIELD SUPPRESSION AND ITS EFFECT UPON ANALYTICAL PERFORMANCE , 1997 .

[9]  D. James.  Quantum dynamics of cold trapped ions with application to quantum computation , 1997, quant-ph/9702053.

[10]  Wineland,et al.  Laser cooling to the zero-point energy of motion. , 1989, Physical review letters.

[11]  A. Wallraff,et al.  Fabrication and characterization of superconducting circuit QED devices for quantum computation , 2005, IEEE Transactions on Applied Superconductivity.

[12]  D. Leibfried,et al.  Towards a scalable quantum computer/simulator based on trapped ions , 2004 .

[13]  Willems,et al.  Creating long-lived neutral-atom traps in a cryogenic environment. , 1995, Physical review. A, Atomic, molecular, and optical physics.

[14]  K. Sugiyama,et al.  Production of YbH + by chemical reaction of Yb + in excited states with H 2 gas , 1997 .

[15]  Boris B. Blinov,et al.  Zero-point cooling and low heating of trapped {sup 111}Cd{sup +} ions , 2004, quant-ph/0404142.

[16]  David J. Wineland,et al.  Surface-electrode architecture for ion-trap quantum information processing , 2005, Quantum Inf. Comput..

[17]  M. A. Rowe,et al.  Heating of trapped ions from the quantum ground state , 2000 .

[18]  C. Monroe,et al.  Architecture for a large-scale ion-trap quantum computer , 2002, Nature.

[19]  M. Lancaster,et al.  Superconducting microwave resonators , 1992 .

[20]  H. Osaki,et al.  Trapping Laser Ablated Ca+ Ions in Linear Paul Trap , 2006 .

[21]  P Zoller,et al.  Interfacing quantum-optical and solid-state qubits. , 2004, Physical review letters.

[22]  R. Rosenfeld.  Nature , 2009, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.

[23]  Takashi S. Nakamura,et al.  Cryogenic Ion Trap for Minimization of Trapped Ion Loss , 2001 .

[24]  R. Haefer.  Cryogenic vacuum techniques , 1981 .

[25]  Realization of a superconducting atom chip. , 2006, Physical review letters.

[26]  R. B. Blakestad,et al.  Microfabricated surface-electrode ion trap for scalable quantum information processing. , 2006, Physical review letters.

[27]  R. Deri.  Dielectric measurements with helical resonators , 1986 .

[28]  F. Schmidt-Kaler,et al.  Quantum State Engineering on an Optical Transition and Decoherence in a Paul Trap , 1999 .

[29]  Kenneth R Brown,et al.  Compact, filtered diode laser system for precision spectroscopy. , 2007, Optics letters.

[30]  K. R. Brown,et al.  Experimental investigation of planar ion traps , 2005, quant-ph/0511018.

[31]  R. C. Weast.  CRC Handbook of Chemistry and Physics , 1973 .

[32]  R. Diehl,et al.  The electromagnetic modes of a helical resonator , 1996 .

[33]  W. M. Haynes.  CRC Handbook of Chemistry and Physics , 1990 .

[34]  P. Excell,et al.  Investigation of superconducting thick-film helical resonator , 1995, IEEE Transactions on Applied Superconductivity.

[35]  Y. Moriwaki,et al.  Effect of a Heavy Collision Partner on Ion Loss from a Radio Frequency Trap , 1998 .

[36]  Kenneth R. Brown,et al.  Laser ablation loading of a surface-electrode ion trap , 2007, 0706.3374.

[37]  C. Monroe,et al.  Scaling and suppression of anomalous heating in ion traps. , 2006, Physical review letters.

[38]  Y. Moriwaki,et al.  Collision Cooling of Ions Stored in Quadrupole Radio-Frequency Trap , 1992 .

[39]  S. Schiller,et al.  Ion-neutral chemical reactions between ultracold localized ions and neutral molecules with single-particle resolution , 2006 .

[40]  J. Cirac,et al.  Quantum Computations with Cold Trapped Ions. , 1995, Physical review letters.