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Quantum Simulation
Classical simulation of Gaussian quantum circuits with non-Gaussian input states
arXiv
Authors: Ulysse Chabaud, Giulia Ferrini, Frédéric Grosshans, Damian Markham
Year
2020
Paper ID
19611
Status
Preprint
Abstract Read
~2 min
Abstract Words
83
Citations
N/A
Abstract
We consider Gaussian quantum circuits supplemented with non-Gaussian input states and derive sufficient conditions for efficient classical strong simulation of these circuits. In particular, we generalise the stellar representation of continuous-variable quantum states to the multimode setting and relate the stellar rank of the input non-Gaussian states, a recently introduced measure of non-Gaussianity, to the cost of evaluating classically the output probability densities of these circuits. Our results have consequences for the strong simulability of a large class of near-term continuous-variable quantum circuits.
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- This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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- We consider Gaussian quantum circuits supplemented with non-Gaussian input states and derive sufficient conditions for efficient classical strong simulation of these circuits.
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