Abstract
We propose a scheme for spin Bell states and GHZ states analysis with quantum dots inside double-sided optical microcavities. The proposed setup involves simple linear optical elements, single polarized photon, and the conventional photon detectors that only distinguish the vacuum and nonvacuum Fock number states. This makes the protocol more realizable in experiments. Numerical simulation shows that the high fidelities can be realized when the side leakage and cavity loss are low, which is feasible in the weak-coupling regime. With all the advantages above, our scheme could be useful in quantum communication processing.
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