Entangling remote superconducting qubits via transducer-generated multi-time-bin states

Journal Article · Wed Jun 18 04:00:00 EDT 2025 · No journal information

DOI:https://doi.org/10.48550/arXiv.2506.15277· OSTI ID:2570342

Wu, Jing ^[1]; Wang, Changqing ^[1]; Cameron, Andrew ^[1]; Zorzetti, Silvia ^[1]

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1. Fermilab

Recent studies have shown long-distance entanglement using NV centers, atoms, and quantum dots with single-photon time-bin encoding. We propose a method to entangle remote superconducting qubits via microwave-optical transduction using multi-time-bin states. By adapting conventional entanglement swapping techniques, fidelity improves from 0.75 to $0.98$ in transduction systems, and 0.66 to 0.89 in noisy channels. The protocol mitigates thermal noise without relying on purification and offers a practical path toward scalable, heterogeneous quantum systems.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: US Department of Energy
• DOE Contract Number: 89243024CSC000002
• OSTI ID: 2570342
• Report Number(s): FERMILAB-PUB-25-0199-SQMS; oai:inspirehep.net:2936671; arXiv:2506.15277
• Journal Information: No journal information, Journal Name: No journal information
• Country of Publication: United States
• Language: English