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.
Original language | English |
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Article number | 043001 |
Number of pages | 38 |
Journal | Quantum Science and Technology |
Volume | 5 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- bosonic codes
- quantum error correction
- superconducting qubits