Twirling and Hamiltonian Engineering via Dynamical Decoupling for GKP Quantum Computing

Jonathan Conrad · 2021 · Physical Review A 103, 022404

| 编号 QCV009 | 主题 连续变量与玻色子算术 | 链接 arXiv:2010.13853 |

摘要

摘要保留原文（英文）

摘要取自 arXiv / 出版方元数据，未作翻译，以保证与原文一致。

I introduce an energy constrained approximate twirling operation that can be used to diagonalize effective logical channels in GKP quantum error correction, project states into the GKP code space and construct a dynamical decoupling sequence with fast displacements pulses to distill the GKP stabilizer Hamiltonians from a suitable substrate-Hamiltonian. The latter is given by an LC-oscillator comprising a superinductance in parallel to a Josephson Junction. This platform in principle allows for protected GKP quantum computing without explicit stabilizer measurements or state-reset by dynamically generating a ‘passively’ stabilized GKP qubit.

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