safety security
Crosstalk Turns Into a Quantum Rowhammer
Experiments across seven processors flip victim-qubit outcomes by as much as 60 percent and degrade quantum random-access codes.
Summary
Experiments across seven processors flip victim-qubit outcomes by as much as 60 percent and degrade quantum random-access codes.
The authors applied crosstalk-inducing activity on six IBM superconducting processors and one IQM processor. Every platform showed an attack effect, although devices with the same coupling graph had different vulnerability profiles. The largest reported victim-qubit outcome-flip probability reached 60 percent, and quantum random-access-code success declined under interference. These are controlled experiments on the tested hardware, not evidence of a remote production exploit, but they show that topology alone does not predict crosstalk exposure.
Why it matters
Experiments across seven processors flip victim-qubit outcomes by as much as 60 percent and degrade quantum random-access codes.
Limits and context
- These are controlled experiments on the tested hardware, not evidence of a remote production exploit, but they show that topology alone does not predict crosstalk exposure.
Key claims
Experiments across seven processors flip victim-qubit outcomes by as much as 60 percent and degrade quantum random-access codes.
Qualification: These are controlled experiments on the tested hardware, not evidence of a remote production exploit, but they show that topology alone does not predict crosstalk exposure.
Evidence: source-2026-11-07-003
Sources
- arXiv preprint 2611.07983, original v1arXiv · primary research
Corrections
: Publication note: This November 7 edition was assembled before its scheduled 9:00 AM America/Detroit reveal but is being published late after recovery from a local build interruption. Its original reporting, image-generation times and scheduled publishAt are preserved.