Monte Carlo model of distilled remote entanglement between superconducting qubits across optical channels

• URL: http://arxiv.org/abs/2503.10842v1
• Date: Thu, 13 Mar 2025 19:51:47 GMT
• Title: Monte Carlo model of distilled remote entanglement between superconducting qubits across optical channels
• Authors: Nicolas Dirnegger, Moein Malekakhlagh, Vikesh Siddhu, Ashutosh Rao, Chi Xiong, Muir Kumph, Jason Orcutt, Abram Falk,
• Abstract summary: A promising quantum computing architecture comprises modules of superconducting quantum processors linked by optical channels via quantum transducers.<n>We show that, even without distillation, present-day transducers are at the threshold of enabling Bell pair distribution with fidelities of 50%.<n>If the next generation of transducers can improve by 3 orders of magnitude in both added noise and efficiency, and increase repetition rates by 50x, then they would allow for remote two-qubit gates achieving 99.7% fidelities at 100 kHz rates.
• Score: 2.360925802137684
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A promising quantum computing architecture comprises modules of superconducting quantum processors linked by optical channels via quantum transducers. To map transducer device performance to system-level channel performance, our model uses Monte Carlo simulations that incorporate 2-to-1 and 3-to-1 entanglement distillation protocols. We show that the Extreme Photon Loss distillation protocol is particularly high performing and that, even without distillation, present-day transducers are at the threshold of enabling Bell pair distribution with fidelities of 50%. If the next generation of transducers can improve by 3 orders of magnitude in both added noise and efficiency, and increase repetition rates by 50x, then they would allow for remote two-qubit gates achieving 99.7% fidelities at 100 kHz rates. These results set targets for transducers to be ready for deployment into scaled superconducting quantum computers.

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