Generation and Error Correction of Entangled GKP States

Moritz Fontboté-Schmidt

current PhD student in the TIQI group

Abstract

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The Gottesman-Kitaev-Preskill code writes qubits into oscillators in a way that is redundant against displacements. It has been used to perform beyond break-even error correction. However, having qubits interact in a fault-tolerant manner, that is one which is “transparent” to errors, is still ongoing work. In this talk I will review the GKP code as well as introduce our recent results regarding generation and error correction of a GKP Bell state, showing use of a fault-tolerant operation in conjunction with GKP states.