Trapped Ion Quantum Computing using Optical Tweezers and Electric Fields

Abstract

We propose a new scalable architecture for trapped ion quantum computing that combines optical tweezers delivering qubit state-dependent local potentials with oscillating electric fields. Since the electric field allows for long-range qubit-qubit interactions mediated by the center-of-mass motion of the ion crystal alone, it is inherently scalable to large ion crystals. Furthermore, our proposed scheme does not rely on either ground state cooling or the Lamb-Dicke approximation. We study the effects of imperfect cooling of the ion crystal, as well as the role of unwanted qubit-motion entanglement, and discuss the prospects of implementing the state-dependent tweezers in the laboratory.

5 pages, 3 figures

References in corpus (5)

• Scalable and Parallel Tweezer Gates for Quantum Computing with Long Ion Strings
• Manipulating phonons of a trapped-ion system using optical tweezers
• Engineering spin-spin interactions with optical tweezers in trapped ions
• High-fidelity ion-trap quantum computing with hyperfine clock states
• Optical super-resolution sensing of a trapped ion's wave packet size

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• Dynamics of quantum discommensurations in the Frenkel-Kontorova chain
• Transverse Polarization Gradient Entangling Gates for Trapped-Ion Quantum Computation
• Near-resonant light scattering by an atom in a state-dependent trap
• A method of an on-demand beamsplitter for trapped-ion quantum computers