A projected least-squares tomography protocol adapted for distributed quantum processors delivers rigorous non-asymptotic trace-norm error bounds that grow exponentially with the number of nodes and certified bounds on entanglement negativity.
Geometrical description of quantal state determination.Journal of Physics A: Mathematical and General, 14(12):3241–3245, December 1981
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Rigorous quantum state tomography for distributed quantum computing
A projected least-squares tomography protocol adapted for distributed quantum processors delivers rigorous non-asymptotic trace-norm error bounds that grow exponentially with the number of nodes and certified bounds on entanglement negativity.