A pure robust self-test of the singlet and Paulis is obtained for non-unitary binary observables via regularization, yielding an explicit analytic O(√ε) distance bound without measurement dilation.
Balanzó-Juandó, A
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Robust self-test of the maximally entangled state of two-qubits without assuming unitary observables
A pure robust self-test of the singlet and Paulis is obtained for non-unitary binary observables via regularization, yielding an explicit analytic O(√ε) distance bound without measurement dilation.