Testing Bell inequalities for multi-partite systems with frequency-encoded photonic qubits
V.O. Sheremetev, A.S. Rudenko, Alexander Trifanov · Nanosystems Physics Chemistry Mathematics · 2018
Generalizing the problem of state nonlocality measurement, we suggest a multi-partite Bell test for multi-photon frequency-entangled quantum state in a quantum network.Each side of this network is equipped with a generalized detector, consisting of an electro-optic phase modulator, frequency filter and photo-counter.In our paper, we develop a theory of Bell nonlocality measurement in frequency domain, using generalized Svetlichny inequalities.Solving the optimization problem for detectors inputs, we obtain optimal measurement parameters which allow strong violation of considered inequalities.As a particular case, we consider bi-and tripartite cases for EPR, GHZ and Wigner states correspondingly.