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Towards fast and scalable trapped-ion quantum logic with integrated photonics
Author(s): Karan K. Mehta; Chi Zhang; Stefanie Miller; Jonathan P. Home
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Paper Abstract

Trapped-ion qubits promise certain fundamental advantages for quantum information processing (QIP), owing to their indistinguishability and relatively high isolation from noisy environments. Though these qualities have allowed demonstrations of the necessary primitives for quantum computation, the complexity of the optical apparatus required is a major impediment to implementation at scales where quantum systems offer a clear advantage over classical computers. Here, we build on previous work with trap-integrated waveguide optics, describing designs and simulations for commercial foundry-fabricated ion trap chips with integrated Si3N4 waveguides and grating couplers to implement multi-qubit operations. We detail a design intended to address and implement quantum logic gates between 5 ions in a single register, and a configuration which utilizes the stable on-chip path lengths of waveguide devices to enact a novel fast entangling two-qubit gate. The devices and approaches presented here could form elements of a scalable architecture for trapped-ion QIP.

Paper Details

Date Published: 4 March 2019
PDF: 11 pages
Proc. SPIE 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII, 109330B (4 March 2019); doi: 10.1117/12.2507647
Show Author Affiliations
Karan K. Mehta, ETH Zürich (Switzerland)
Chi Zhang, ETH Zürich (Switzerland)
Stefanie Miller, ETH Zürich (Switzerland)
Jonathan P. Home, ETH Zürich (Switzerland)

Published in SPIE Proceedings Vol. 10933:
Advances in Photonics of Quantum Computing, Memory, and Communication XII
Philip R. Hemmer; Alan L. Migdall; Zameer Ul Hasan, Editor(s)

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