QrackBridge (and bug fixes)

(Anthropic) Claude has produced QrackBridge, like QrackAceBackend, but with a tunable MPS-like bond dimension for cross-patch connectivity that reintroduces additional fidelity at the cost of (sub-)exponential bond-dimension overhead. It supports 2 patches, split equally. Note that proper mapping might require consideration of effective geometric patch layout.

As an experiment, Mac wheels are source-only for this version. Without getting overly dramatic, in Dan Strano's personal opinion, Apple has built a culture of open hostility toward right-to-repair and many OSS scientific middleware projects, at least by impersonal general policy. Qrack would ask Mac (scientific software) users whether Apple actually offers anything at all better than Linux, because we don't think so. Source builds should still work on Mac devices (including Intel). If this poses a major issue for you, please feel free to open an issue ticket about it: we want to reserve our resources for what our users actually need and prefer, but silence about this change would let us know it isn't particularly missed.

What's Changed

• Pass the Pauli basis of exp() and mcexp() as c_int by @mehmetniyazikayi in #46

New Contributors

• @mehmetniyazikayi made their first contribution in #46

Full Changelog: v2.29.5...v2.30.0

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