A linear-optics proof of principle reports nonlocal von Neumann measurement of sigma_z⊗sigma_z on two photonic qubits, with output state fidelities of 0.74 to 0.89.
Vaidman, Phys
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Experimental nonlocal measurement of a product observable
A linear-optics proof of principle reports nonlocal von Neumann measurement of sigma_z⊗sigma_z on two photonic qubits, with output state fidelities of 0.74 to 0.89.