Deterministic generation of arbitrary n -photon states in a waveguide-QED system
Fan Xing, Zeyang Liao, Xuehua Wang · Physical Review A · 2024
Quantum light sources play a vital role in various aspects of quantum information science, but on-demand highly efficient generation of arbitrary multiphoton states which can be easily integrated is still challenging. Here, we propose a chip-integrable scheme to deterministically generate a group of $n$ photons with very high fidelity based on the long-range collective interaction between the emitters mediated by the waveguide modes. The $n$ photons are shown to be emitted in a bundle while two successive $n$-photon bundles tend to be antibunched and can behave as an $n$-photon gun. Our results here can find applications in areas such as chip-integrated quantum information processing and quantum metrology.