6 research outputs found
Investigation of two-frequency Paul traps for antihydrogen production
Radio-frequency (rf) Paul traps operated with multifrequency rf trapping
potentials provide the ability to independently confine charged particle
species with widely different charge-to-mass ratios. In particular, these traps
may find use in the field of antihydrogen recombination, allowing antiproton
and positron clouds to be trapped and confined in the same volume without the
use of large superconducting magnets. We explore the stability regions of
two-frequency Paul traps and perform numerical simulations of small,
multispecies charged-particle mixtures that indicate the promise of these traps
for antihydrogen recombination.Comment: 11 pages, 10 figure
Coherent Control of the Rotational Degree of Freedom of a Two-Ion Coulomb Crystal
We demonstrate the preparation and coherent control of the angular momentum
state of a two-ion crystal. The ions are prepared with an average angular
momentum of freely rotating at 100~kHz in a circularly symmetric
potential, allowing us to address rotational sidebands. By coherently exciting
these motional sidebands, we create superpositions of states separated by up to
four angular momentum quanta. Ramsey experiments show the expected dephasing of
the superposition which is dependent on the number of quanta separating the
states. These results demonstrate coherent control of a collective motional
state described as a quantum rotor in trapped ions. Moreover, our work offers
an expansion of the utility of trapped ions for quantum simulation,
interferometry, and sensing
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Coherent Control of the Rotational Degree of Freedom of a Two-Ion Coulomb Crystal.
We demonstrate the preparation and coherent control of the angular momentum state of a two-ion crystal. The ions are prepared with an average angular momentum of 7850ℏ freely rotating at 100 kHz in a circularly symmetric potential, allowing us to address rotational sidebands. By coherently exciting these motional sidebands, we create superpositions of states separated by up to four angular momentum quanta. Ramsey experiments show the expected dephasing of the superposition which is dependent on the number of quanta separating the states. These results demonstrate coherent control of a collective motional state described as a quantum rotor in trapped ions. Moreover, our Letter offers an expansion of the utility of trapped ions for quantum simulation, interferometry, and sensing