A complete continuous-variable quantum computation architecture: from
cluster state generation to fault-tolerant accomplishment
- URL: http://arxiv.org/abs/2312.13877v3
- Date: Wed, 31 Jan 2024 13:28:43 GMT
- Title: A complete continuous-variable quantum computation architecture: from
cluster state generation to fault-tolerant accomplishment
- Authors: Peilin Du, Jing Zhang, Tiancai Zhang, Rongguo Yang, Jiangrui Gao
- Abstract summary: Continuous-variable measurement-based quantum computation is a promising candidate for practical, scalable, universal, and fault-tolerant quantum computation.
In this work, a complete architecture including cluster state preparation, gate implementations, and error correction is demonstrated.
- Score: 5.365601188675682
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Continuous-variable measurement-based quantum computation, which requires
deterministically generated large-scale cluster state, is a promising candidate
for practical, scalable, universal, and fault-tolerant quantum computation. In
this work, a complete architecture including cluster state preparation, gate
implementations, and error correction, is demonstrated. First, a scheme for
generating two-dimensional large-scale continuous-variable cluster state by
multiplexing both the temporal and spatial domains is proposed. Then, the
corresponding gate implementations for universal quantum computation by gate
teleportation are discussed and the actual gate noise from the generated
cluster state and Gottesman-Kitaev-Preskill (GKP) state are considered. After
that, the quantum error correction can be further achieved by utilizing the
square-lattice GKP code. Finally, a fault-tolerent quantum computation can be
realized by introducing bias into the square-lattice GKP code (to protect
against phase-flips) and concatenating a classical repetition code (to handle
the residual bit-flip errors), with a squeezing threshold of 12.3 dB. Our work
provides a possible option for a complete fault-tolerent quantum computation
architecture in the future.
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