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Showing 1–10 of 10 results
Advanced filters: Author: John Chiaverini Clear advanced filters

  • Two-dimensional arrays of trapped ion qubits are attractive platforms for quantum information processing, but rapid reloading remains a challenge. Here the authors use a continuous flux of pre-cooled neutral atoms to achieve fast loading of single ions without affecting the coherence of adjacent qubits.

    • Colin D. Bruzewicz
    • Robert McConnell
    • Jeremy M. Sage
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-6

  • A chip-integrated laser with 7.5 × 10−14 fractional frequency instability is demonstrated by active stabilization to an on-chip 6.1-m-long spiral resonator. By using this laser to interrogate the narrow-linewidth transition of 88Sr+, a clock instability averaging down as \(3.9\times 1{0}^{-14}/\sqrt{\tau }\) is achieved.

    • William Loh
    • David Reens
    • Robert McConnell
    Research
    Nature Photonics
    Volume: 19, P: 277-283

  • A surface-electrode ion-trap chip is demonstrated, which delivers all the wavelengths of light required for the preparation and operation of ion qubits.

    • R. J. Niffenegger
    • J. Stuart
    • J. Chiaverini
    Research
    Nature
    Volume: 586, P: 538-542

  • By using a stimulated Brillouin scattering laser in a strontium-ion optical clock instead of the usual bulk-cavity-stabilized laser, the need for vacuum is removed and resonator volume is substantially reduced.

    • William Loh
    • Jules Stuart
    • Robert McConnell
    Research
    Nature
    Volume: 588, P: 244-249

  • Individual ion qubits held in a planar ion trap are optically addressed with scalable nanophotonic waveguides and focusing grating couplers integrated with the trap chip.

    • Karan K. Mehta
    • Colin D. Bruzewicz
    • John Chiaverini
    Research
    Nature Nanotechnology
    Volume: 11, P: 1066-1070

  • Trapped-ion qubits have great potential for quantum computation, but materials improvements are needed. This Review surveys materials opportunities to improve the performance of trapped-ion qubits, from understanding the surface science that leads to electric-field noise to developing methods for building ion traps with integrated optics and electronics.

    • Kenneth R. Brown
    • John Chiaverini
    • Hartmut Häffner
    Reviews
    Nature Reviews Materials
    Volume: 6, P: 892-905