Extended Data Fig. 2: Bipartite decomposition of GBS circuit for entanglement analysis.
From: Classical algorithm for simulating experimental Gaussian boson sampling
(a) Any pure output state of a GBS circuit can be decomposed as (b) the product of two-mode squeezed vacuum (TMSV) states followed by local Gaussian unitary operations. (c) Thus, after tracing out the other system, each local system can be described by the product of thermal states followed by Gaussian unitary operation. The Gaussian unitary operations for each system are different in general.
