Trapped Ions, Entanglement, and Quantum Computing, ed. by B.L. Fearey
C J. Myatt, B E. King, D Kielpinski, Dietrich Leibfried, Q A. Turchette, Chris S. Wood, Wayne M. Itano, C Monroe, David J. Wineland
A miniature, elliptcal ring rf (Paul) ion trap has been used in recent experiments toward realizing a quantum computer in a trapped ion system. With the combination of small spatial dimensions and high rf drive potentials, around 500 V amplitude, we have achieved secular oscillation frequencies in the range of 5-20 MHz. The equilibrium positions of pairs of ions that are crystallized in this trap lie along the long axis of the ellipse. By adding a static potential to the trap, the micromotion of two crystallized ions may be reduced relative to the case of pure rf confinement. The presence of micromotion reduces the strength of internal transitions in the ion, an effect that is chracterized by a Debye-Waller factor, in analogy with the reduction of Bragg scattering at finite temperature in a crystal lattice. We have demonstrated the dependence of the rates of internal transitions on the amplitude of micromotion, and we propose a scheme to use this effect to differentially address the ions.
quantum computing, quantum logic, ion traps, laser cooling and trapping
, King, B.
, Kielpinski, D.
, Leibfried, D.
, Turchette, Q.
, Wood, C.
, Itano, W.
, Monroe, C.
and Wineland, D.
Trapped Ions, Entanglement, and Quantum Computing, ed. by B.L. Fearey, Proceedings of SPIE, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=105482
(Accessed October 28, 2021)