Classical simulation of Gaussian quantum circuits with non-Gaussian input states
Artikel i vetenskaplig tidskrift, 2021

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.


Ulysse Chabaud

Sorbonne Université

Université Paris Descartes

Giulia Ferrini

Chalmers, Mikroteknologi och nanovetenskap, Tillämpad kvantfysik

Frederic Grosshans

Sorbonne Université

Damian Markham

University of Tokyo

Sorbonne Université

Physical Review Research

26431564 (ISSN)

Vol. 3 3 033018


Annan fysik

Sannolikhetsteori och statistik

Matematisk analys



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