A thresholdless single-atom laser based on multiphoton resonances in a driven Jaynes-Cummings system

Simon A. Haine

Young-Tak Chough, Hyunchul Nha, Kyungwon An

We review a non-resonant Jaynes-Cummings system where the two-state atom is driven by an external field of arbitrary frequency. We identify the multiphoton resonances in the Jaynes-Cummings Ladder (JCL) system, and thereby explain all the “resonance” peaks at far-off resonant frequencies.

Young-Tak Chough, Hee-Jong Moon, Hyunchul Nha +1 more

We propose a scheme of a one-atom laser which produces a cavity-field virtually in a stationary Fock state. It is based upon the unexpectedly simple dynamics of the Jaynes-Cummings system at multiphoton resonances at far-off resonance. We find that an anomalously high cavity mode excitation occurs at a particular set of atomic, cavity, and driving-field frequencies.

Chun-Chia Chen, Shayne Bennetts, Rodrigo González Escudero +2 more

Peng Zhou, Jin-sheng Peng

Jing Tang, Yuangang Deng

We present a study on manipulation and enhancement of multiphoton bundles emission under a moderate atom-cavity coupling, by constructing a two-photon Jaynes-Cummings model integrated with Kerr nonlinearity in a single atom-cavity system. We show that the vacuum-Rabi splittings for the n th dressed states can be significantly enhanced by Kerr interaction. This remarkable enhancement in energy-spectrum anharmonicity with the well-resolved multiphoton resonance facilitates the generation of special nonclassical states beyond the strong-coupling limit in the experiment. In particular, both two- and three-photon blockades are observed with adjusting the amplitude of the cavity-driving or atom-pump fields. Moreover, we discover that transitions between two- and three-photon bundles can be achieved through tuning the atom-cavity detuning or Kerr nonlinearity. It further showcases the three-photon blockade is substantially strengthened when both the cavity and atomic fields are jointly driven. Our proposal unveils a pathway for realizing highly controllable nonclassical states and quantum devices with combining two-photon Jaynes-Cummings interactions and Kerr nonlinearity, which may pave the way for versatile applications in quantum information science, e.g., all-optical switches and transistors. Published by the American Physical Society 2024