General characterization of qubit-preserving impairments on two-qubit Bell nonlocality

A general technique for experimentally characterizing the effect of qubit-preserving impairments on the Clauser-Horne-Shimony-Holt parameter is introduced. This technique is independent of the underlying qubit encoding and is theoretically demonstrated for specific example impairments in polarization-encoded quantum -optical qubits. Included in this analysis is how spectrotemporal impairments can be incorporated into this technique.

Automated summary

A general technique is introduced to experimentally characterize the effect of qubit-preserving impairments on the Clauser-Horne-Shimony-Holt parameter. This technique is independent of the qubit encoding and is theoretically demonstrated for specific impairments in polarization-encoded quantum-optical qubits. The analysis also includes the incorporation of spectrotemporal impairments into this technique.