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arXiv · 1901.09070

Simulation of Qubit Quantum Circuits via Pauli Propagation

Patrick Rall·Daniel Liang·Jeremy Cook·William Kretschmer
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Abstract

We present novel algorithms to estimate outcomes for qubit quantum circuits. Notably, these methods can simulate a Clifford circuit in linear time without ever writing down stabilizer states explicitly. These algorithms outperform previous noisy near-Clifford techniques for most circuits. We identify a large class of input states that can be efficiently simulated despite not being stabilizer states. The algorithms leverage probability distributions constructed from Bloch vectors, paralleling previously known algorithms that use the discrete Wigner function for qutrits.

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Patrick Rall, Daniel Liang, Jeremy Cook, William Kretschmer. 2019-01-25. Simulation of Qubit Quantum Circuits via Pauli Propagation. https://doi.org/10.1103/physreva.99.062337

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