Export citation

Export citation

Choose format for download:

Download Citation

    Loss-tolerant parallelized Bell-state generation with a hybrid cat qudit

    Z. M. McIntyre1,2,* and W. A. Coish2,†

    • 1Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
    • 2Department of Physics, McGill University, 3600 rue University, Montreal, Quebec, Canada H3A 2T8

    • *Contact author: zoe.mcintyre@unibas.ch
    • †Contact author: william.coish@mcgill.ca

    Phys. Rev. A 112, 062609 – Published 5 December, 2025

    DOI: https://doi.org/10.1103/x56x-vld7

    Abstract

    Having multiple Bell pairs shared by distant quantum registers provides a key resource for both quantum networks and distributed quantum computing. In this paper, we present a protocol for parallelized Bell-pair generation that uses the phase of a coherent light pulse to encode a qudit, enabling the simultaneous generation of multiple Bell pairs. By encoding a qudit in a basis of light-matter Schrödinger's cat states, the loss of a photon in transit can be detected through an XX parity syndrome, allowing the backaction due to the lost photon to be deterministically corrected through single-qubit rotations. The protocol presented here is compatible with existing technologies in both optical and microwave (circuit QED) architectures, supporting near-term implementation across diverse quantum platforms.

    Physics Subject Headings (PhySH)

    Authorization Required

    We need you to provide your credentials before accessing this content.

    References (Subscription Required)

    Outline

    Information

    Sign In to Your Journals Account

    Filter

    Filter

    Article Lookup

    Enter a citation