We present a theoretical proposal to realize a collective two-photon blockade in a coherently-driven, two-qubits cavity QED system. We show that the three-photon blockade with two-photon bunching can be achieved when two qubits couple the cavity asymmetrically. The proposal may predict many new quantum statistical features due to the collective behavior of atoms and can be useful to generate non-classical photon pairs.

© 2018 The Author(s)

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