Transduction-Enabled Superconducting Quantum Repeater: Toward Deterministic Entanglement Distribution with High-Fidelity Gates
Abstract
Long-distance entanglement distribution is hindered by photon loss in optical fibers and the nocloning theorem. Optical quantum repeater (QR) protocols rely on Bell state measurements (BSMs), they are intrinsically limited to probabilistic photon operations and fail 50% of the time. We propose a hybrid approach to building quantum repeaters that combines the high transmission speed of photonic qubits in optical fiber with the high-fidelity quantum processing capabilities enabled by superconducting circuits. The transduction-enabled superconducting QR (TESQR) architecture eliminates the need for probabilistic BSMs and allows deterministic processing operations. The TESQR framework always yields a final state at the remote nodes rather than aborting on photon loss, manifesting deterministic entanglement distribution within certain parameter regimes. We evaluate the performance by assessing output-state fidelities and success probabilities of entanglement distribution using realistic noise models. Additionally, we integrate an entanglement purification scheme and evaluate the performance through numerical simulations in QuTiP environment. Our results show that, for entanglement swapping, the proposed scheme improves the entanglement distribution rate by an average of 63% and by up to 159% compared with photonic-only architectures. Moreover, after purification, the end-to-end fidelities exceed 0.8 over distances up to 20 km.
Related
- Scalable entanglement distribution using encoded hybrid repeater chains
- Entanglement Swapping Scheduling for Quantum Repeater Chains under Decoherence during Classical Communications
- Topology-Dependent Enhancement of Entanglement Extraction in Repeater Graph States
- Optimal Entanglement Routing in Quantum Repeater Chains: Beyond Fixed Operation Order and Purification Schedule
- High-Frequency Gravitational-Wave Transduction in a SQUID-Terminated Superconducting Cavity
BibTeX
@misc{fiorini2026transductionenabled,
title = {{Transduction-Enabled Superconducting Quantum Repeater: Toward Deterministic Entanglement Distribution with High-Fidelity Gates}},
author = {Francesco Fiorini and Jing Wu and Andrew Cameron and Changqing Wang and Doga M. Kurkcuoglu and Rosario G. Garroppo and Michele Pagano and Silvia Zorzetti},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.19784},
eprint = {2609.19784},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.19784},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Transduction-Enabled Superconducting Quantum Repeater: Toward Deterministic Entanglement Distribution with High-Fidelity Gates
AU - Francesco Fiorini
AU - Jing Wu
AU - Andrew Cameron
AU - Changqing Wang
AU - Doga M. Kurkcuoglu
AU - Rosario G. Garroppo
AU - Michele Pagano
AU - Silvia Zorzetti
PY - 2026
DA - 2026/09/18
PB - arXiv
DO - 10.48550/arxiv.2609.19784
UR - https://arxiv.org/abs/2609.19784
AB - Long-distance entanglement distribution is hindered by photon loss in optical fibers and the nocloning theorem. Optical quantum repeater (QR) protocols rely on Bell state measurements (BSMs), they are intrinsically limited to probabilistic photon operations and fail 50% of the time. We propose a hybrid approach to building quantum repeaters that combines the high transmission speed of photonic qubits in optical fiber with the high-fidelity quantum processing capabilities enabled by superconducting circuits. The transduction-enabled superconducting QR (TESQR) architecture eliminates the need for probabilistic BSMs and allows deterministic processing operations. The TESQR framework always yields a final state at the remote nodes rather than aborting on photon loss, manifesting deterministic entanglement distribution within certain parameter regimes. We evaluate the performance by assessing output-state fidelities and success probabilities of entanglement distribution using realistic noise models. Additionally, we integrate an entanglement purification scheme and evaluate the performance through numerical simulations in QuTiP environment. Our results show that, for entanglement swapping, the proposed scheme improves the entanglement distribution rate by an average of 63% and by up to 159% compared with photonic-only architectures. Moreover, after purification, the end-to-end fidelities exceed 0.8 over distances up to 20 km.
ER -