As the number of qubits grows, the probability distribution of coarse-grained states from imperfect measurements concentrates sharply around the maximally mixed state.
(6) treats all subsystems equally, in the caseN= 2 we assume thatp 1 < p2 with- out loss of generality
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Detecting quantum many-body states with imperfect measuring devices
As the number of qubits grows, the probability distribution of coarse-grained states from imperfect measurements concentrates sharply around the maximally mixed state.