Alibaba Cloud Quantum Development Platform: Surface Code Simulations with Crosstalk

• URL: http://arxiv.org/abs/2002.08918v1
• Date: Thu, 20 Feb 2020 18:07:45 GMT
• Title: Alibaba Cloud Quantum Development Platform: Surface Code Simulations with Crosstalk
• Authors: Cupjin Huang, Xiaotong Ni, Fang Zhang, Michael Newman, Dawei Ding, Xun Gao, Tenghui Wang, Hui-Hai Zhao, Feng Wu, Gengyan Zhang, Chunqing Deng, Hsiang-Sheng Ku, Jianxin Chen, and Yaoyun Shi
• Abstract summary: We report on the Alibaba Cloud Quantum Development Platform (AC-QDP) AC-QDP provides a set of tools for aiding the development of both quantum computing algorithms and quantum processors. We simulate a distance-3 logical qubit encoded in the 17-qubit surface code using experimental noise parameters for transmon qubits in a planar circuit QED architecture.
• Score: 28.73514662377305
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report, in a sequence of notes, our work on the Alibaba Cloud Quantum Development Platform (AC-QDP). AC-QDP provides a set of tools for aiding the development of both quantum computing algorithms and quantum processors, and is powered by a large-scale classical simulator deployed on Alibaba Cloud. In this note, we simulate a distance-3 logical qubit encoded in the 17-qubit surface code using experimental noise parameters for transmon qubits in a planar circuit QED architecture. Our simulation features crosstalk induced by ZZ-interactions. We show that at the current-stage noise levels, crosstalk contributes significantly to the dephasing of the logical qubit. This results in a total phase-flip probability of $\sim 0.6\%$, about $60\%$ higher than expected without considering crosstalk. This indicates that for the code considered, the current noise parameters approach, but do not yet meet, the break-even fault-tolerance regime.

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