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arXiv · 1901.05003

Quantum Teleportation-Inspired Algorithm for Sampling Large Random Quantum Circuits

Ming-Cheng Chen·Riling Li·Lin Gan·Xiaobo Zhu·Guangwen Yang·Chao-Yang Lu·Jian-Wei Pan
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Abstract

We show that low-depth random quantum circuits can be efficiently simulated by a quantum teleportation-inspired algorithm. By using logical qubits to redirect and teleport the quantum information in quantum circuits, the original circuits can be renormalized to new circuits with a smaller number of logical qubits. We demonstrate the algorithm to simulate several random quantum circuits, including 1D-chain 1000-qubit 42-depth, 2D-grid 125*8-qubit 42-depth and 2D-Bristlecone 72-qubit 32-depth circuits. Our results present a memory-efficient method with a clear physical picture to simulate low-depth random quantum circuits.

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Ming-Cheng Chen, Riling Li, Lin Gan, Xiaobo Zhu, Guangwen Yang, Chao-Yang Lu, Jian-Wei Pan. 2019-01-15. Quantum Teleportation-Inspired Algorithm for Sampling Large Random Quantum Circuits. https://doi.org/10.1103/physrevlett.124.080502

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