Trapped Ion Quantum Computing using Optical Tweezers and Electric Fields

• URL: http://arxiv.org/abs/2106.07486v1
• Date: Mon, 14 Jun 2021 15:16:16 GMT
• Title: Trapped Ion Quantum Computing using Optical Tweezers and Electric Fields
• Authors: M. Mazzanti, R. X. Sch\"ussler, J. D. Arias Espinoza, Z. Wu, R. Gerritsma and A. Safavi-Naini
• Abstract summary: We propose a new 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.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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.

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