Towards scalable bosonic quantum error correction
B M Terhal, J Conrad, C Vuillot
Abstract
Abstract We review some of the recent efforts in devising and engineering bosonic qubits for superconducting devices, with emphasis on the Gottesman–Kitaev–Preskill (GKP) qubit. We present some new results on decoding repeated GKP error correction using finitely-squeezed GKP ancilla qubits, exhibiting differences with previously studied stochastic error models. We discuss circuit-QED ways to realize CZ gates between GKP qubits and we discuss different scenarios for using GKP and regular qubits as building blocks in a scalable superconducting surface code architecture.
Topics & Concepts
QubitError detection and correctionScalabilityQuantum error correctionDecoding methodsQuantum computerQuantum decoherenceQuantumComputer scienceCode (set theory)AlgorithmPhysicsEncoding (memory)Quantum mechanicsSuperconductivityElectronic engineeringCoherence (philosophical gambling strategy)Theoretical computer scienceTopology (electrical circuits)Quantum informationQuantum Computing Algorithms and ArchitectureQuantum Information and CryptographyQuantum and electron transport phenomena