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A complete continuous-variable quantum computation architecture based on the 2D spatiotemporal cluster state by Du, Peilin; Zhang, Jing; Zhang, Tiancai; Yang, Rongguo; Gao, Jiangrui is a scholarly article available to read on EtoBox.

What is A complete continuous-variable quantum computation architecture based on the 2D spatiotemporal cluster state about?

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, based on our compact and scalable scheme of generating a two-dimensional spatiotemporal cluster state, a complete architecture including cluster state preparation, gate implementations, and error correction, is proposed. 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 by gate teleportation are discussed and the actual gate noise from the generated cluster state is considered. After that, the quantum error correction can be further achieved by utilizing the square-lattice Gottesman-Kitaev-Preskill (GKP) code. Finally, a fault-tolerant quantum computation can be realized by introducing bias into the square-lattice GKP code (to protect against phase-flip errors) and concatenating a repetition code (to handle the residual bit-flip errors), with a squeezing threshold of 12.3 dB. Our work provi

Author

Du, Peilin; Zhang, Jing; Zhang, Tiancai; Yang, Rongguo; Gao, Jiangrui

Published

2023

Language

EN