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Asymptotic advantage of quantum one-way and SMP communication for total functions

Dmytro Gavinsky

cs.CCarXiv:2611.07318

Abstract

We exhibit a total Boolean function on n input bits whose bounded-error quantum simultaneous-message (and hence one-way) communication complexity is in O( n), whereas its randomised one-way (and hence simultaneous-message) communication complexity is in Ω(n). The same function admits a classical simultaneous-message protocol of cost O( n) when the players share O( n) EPR pairs.

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