82 citations · 181 across the 7 of their papers we have counts for
7 papers
Time-adaptive phase estimation
Brennan de Neeve, Andrey V. Lebedev, Vlad Negnevitsky +1
Phase estimation is known to be a robust method for single-qubit gate calibration in quantum computers, while Bayesian estimation is widely used in devising optimal methods for lea…
Low-excitation transport and separation of high-mass-ratio mixed-species ion chains
Francesco Lancellotti, Stephan Welte, Matteo Simoni +6
We demonstrate low-excitation transport and separation of two-ion crystals consisting of one beryllium and one calcium ion, with a high mass ratio of . The full separation inv…
Trapping and Ground-State Cooling of a Single H
N. Schwegler, D. Holzapfel, M. Stadler +4
We demonstrate co-trapping and sideband cooling of a H - Be ion pair in a cryogenic Paul trap. We study the chemical lifetime of H and its dependence on the app…
Direct characteristic-function tomography of quantum states of the trapped-ion motional oscillator
Christa Flühmann, Jonathan P. Home
We implement direct readout of the symmetric characteristic function of quantum states of the motional oscillation of a trapped calcium ion. Using suitably chosen internal electron…
Quantum harmonic oscillator state control in a squeezed Fock basis
D. Kienzler, H. -Y. Lo, V. Negnevitsky +3
We demonstrate control of a trapped-ion quantum harmonic oscillator in a squeezed Fock state basis, using engineered Hamiltonians analogous to the Jaynes-Cummings and anti-Jaynes-C…
Cooling atomic ions with visible and infra-red light
F. Lindenfelser, M. Marinelli, V. Negnevitsky +2
We demonstrate the ability to load, cool and detect singly-charged calcium ions in a surface electrode trap using only visible and infrared lasers for the trapped-ion control. As o…
Fast expansions and compressions of trapped-ion chains
M. Palmero, S. Martínez-Garaot, J. Alonso +2
We investigate the dynamics under diabatic expansions/compressions of linear ion chains.Combining a dynamical normal-mode harmonic approximation with the invariant-based inverse-en…