A distributed protocol lets one party characterize a lossy linear-optical network during randomized boson sampling by using heterodyne measurements on shared squeezed light, with effort that grows linearly in the number of modes.
This larger network is characterized by a unitary operator˜U and a corresponding unitary transfer matrix ˜U = (L R S ˜L ) , (A1) which describes, as in Eq
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In situ characterization of linear-optical networks in randomized boson sampling
A distributed protocol lets one party characterize a lossy linear-optical network during randomized boson sampling by using heterodyne measurements on shared squeezed light, with effort that grows linearly in the number of modes.