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quant-ph2011★ 67 cited
Causal structure of the entanglement renormalization ansatz
Cédric Bény
We show that the multiscale entanglement renormalization ansatz (MERA) can be reformulated in terms of a causality constraint on discrete quantum dynamics. This causal structure is…
quant-ph2011★ 27 cited
Approximate simulation of quantum channels
Cédric Bény, Ognyan Oreshkov
In Ref. [1], we proved a duality between two optimizations problems. The primary one is, given two quantum channels M and N, to find a quantum channel R such that RN is optimally c…