Cavity Quantum Electrodynamics Berman Pdf Download
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In agreement with the theoretical work stating the connection to split Bell inequalities27,28,29,30, the main result of this work is that, under ideal conditions, the negative values of the multiparty Bell inequality that we have constructed, which is less than the bound value given by quantum mechanics, can be achieved for spontaneously emitted single photons from the nonlinearity of cavity QED only if the entangled state is reflected and reflected off the cavity. We have also studied the conditions for the achievement of negative values under a realistic scenario. Using the photon creation rate from the spontaneous emission of a single atom and the collective cooperativity factor, we find that a pure constructive interference at resonance can only occur for approximately 25 % of the atoms, and for realistic photon emission rates, constructive interference occurs for only a few percent of the atoms under the same cooperativity factor. Perhaps most importantly, we find that a multidimensional Bell inequality for measuring genuine nonlocality delays its optimization relative to an optimized Bell inequality for measuring two-particle entanglement.
We have focussed on the implementation of two-particle nonlocality as a probe for underlying quantum correlations in the above-mentioned models. This achieves negative correlations even in the absence of single-particle entanglement. By tuning the parameters of the underlying Hamiltonian, the nonlocality can oscillate in a resonance-like manner. The results show that for interactions with $J=3/2$ atoms in the second model, significant oscillations of the violation of the Bell inequality with respect to time can indeed be observed. In this case, our results are achieved by tuning both the number of cavities n, as well as the atom-cavity coupling strength.
Due to their high efficiency, these systems allow the detection of the necessary quantum fluctuations. Further, we have shown that these collective systems display reciprocity properties, indicating that entanglement may be used to induce nonlocality. In this respect, it is worth mentioning that nonlocality without entanglement has been observed by using a modified GHZ state31,32 as the starting state. d2c66b5586