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arXiv · 2405.00191

Resource-compact time-optimal quantum computation

Taewan Kim·Kyunghyun Baek·Yongsoo Hwang·Jeongho Bang
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Abstract

Fault-tolerant quantum computation enables reliable quantum computation but incurs a significant overhead from both time and resource perspectives. To reduce computation time, Austin G. Fowler proposed time-optimal quantum computation by constructing a quantum circuit for a fault-tolerant $T$ gate without probabilistic $S$ gate correction. In this work, we introduce a resource-compact quantum circuit that significantly reduces resource requirements by more than 60% for a fault-tolerant $T$ gate without probabilistic $S$ gate correction. Consequently, we present a quantum circuit that minimizes resource utilization for time-optimal quantum computation, demonstrating efficient time-optimal quantum computation. Additionally, we describe an efficient form involving initialization, CNOTs, and measurements, laying the foundation for the development of an efficient compiler for fault-tolerant quantum computation.

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Taewan Kim, Kyunghyun Baek, Yongsoo Hwang, Jeongho Bang. 2024-04-30. Resource-compact time-optimal quantum computation. https://arxiv.org/abs/2405.00191

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