New paper from our collaboration with Argonne/Chicago. I think this is one of the most thorough, careful papers on quantum repeaters out there.
We began more than two years ago with the idea of just making sure our simulators work right, to compare the output on some simple tasks and strengthen our confidence in both simulators. It turned into a journey of understanding, identifying a long list of assumptions underlying our work that differed in the two groups.
It also resulted in a number of outright bugfixes to both simulators, including several months of head scratching near the end where the paper was essentially ready to go but we couldn't get an equation and the output of one of the simulators to match. Now resolved.
If you work on quantum networks, check it out -- and check your own assumptions about protocols and design and compare to ours!
As always, feedback welcome. And thanks to all ten coauthors, especially Michal and Joaquin, for pushing through on the coding, math and writing.
Joaquin Chung (1 and 2), Michal HajduĊĦek (3), Naphan Benchasattabuse (3), Robert J. Hayek (1 and 4), Alexander Kolar (1 and 2), Ansh Singal (1 and 4), Kento Samuel Soon (3), Kentaro Teramoto (5), Allen Zang (1 and 2), Caitao Zhan (1), Raj Kettimuthu (1 and 2), Rodney Van Meter (3) ((1) Argonne National Laboratory, (2) University of Chicago, (3) Keio University, (4) Northwestern University, (5) Mercari Inc.)
https://arxiv.org/abs/2610.09322
Oh, and I should point out that there was a preliminary version of this published at an IEEE INFOCOM workshop in 2025. The new version is better, though! (Literally almost two years of extra work, substantially deeper and more detailed.)
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