Thermal, quantum antibunching and lasing thresholds from single emitters to macroscopic devices

Carroll, Mark Anthony and D'Alessandro, Giampaolo and Lippi, Gian Luca and Oppo, Gian-Luca and Papoff, Francesco (2021) Thermal, quantum antibunching and lasing thresholds from single emitters to macroscopic devices. Physical Review Letters, 126 (6). 063902. ISSN 0031-9007

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    Abstract

    Starting from a fully quantized Hamiltonian for an ensemble of identical emitters coupled to the modes of an optical cavity, we determine analytically regimes of thermal, collective anti-bunching and laser emission that depend explicitly on the number of emitters. The lasing regime is reached for a number of emitters above a critical number—which depends on the light-matter coupling, detuning, and the dissipation rates— via a universal transition from thermal emission to collective anti-bunching to lasing as the pump increases. Cases where the second order intensity correlation fails to predict laser action are also presented.

    ORCID iDs

    Carroll, Mark Anthony, D'Alessandro, Giampaolo, Lippi, Gian Luca, Oppo, Gian-Luca ORCID logoORCID: https://orcid.org/0000-0002-5376-4309 and Papoff, Francesco ORCID logoORCID: https://orcid.org/0000-0002-3456-343X;