Saarlandes Team Quantifies GKP Code Error Cancellation Overheads
Researchers from Saarland University have calculated the overhead involved in combining probabilistic error cancellation with Gottesman-Kitaev-Preskill codes. The work examines how continuous-variable encoding of qubits interacts with a mitigation technique that trades additional sampling cost for reduced noise. The reported calculations focus on GKP-encoded qubits and quantify the extra measurement burden of the combined approach.
OutlookPlausible
These overhead estimates could become reference numbers for experimental bosonic-code groups deciding whether adding probabilistic error cancellation to a GKP-protected qubit is worth the sampling cost.