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arXiv · 1907.09572

Steady states, squeezing, and entanglement in intracavity triplet down conversion

Mathew D. E. Denys·Murray K. Olsen·Luke S. Trainor·Harald G. L. Schwefel·Ashton S. Bradley
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Abstract

Triplet down conversion, the process of converting one high-energy photon into three low-energy photons, may soon be experimentally feasible due to advances in optical resonator technology. We use quantum phase-space techniques to analyse the process of degenerate intracavity triplet down conversion by solving stochastic differential equations within the truncated positive-P representation. The time evolution of both intracavity mode populations are simulated, and the resulting steady-states are examined as a function of the pump intensity. Quantum effects are most pronounced in the region immediately above the semi-classical pumping threshold, where our numerical results differ significantly from semi-classical predictions. Regimes of measurable squeezing and bipartite entanglement are identified from steady-state spectra of the cavity output fields. We validate the truncated positive-P description against Monte Carlo wave function simulations, finding good agreement for low mode populations.

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Mathew D. E. Denys, Murray K. Olsen, Luke S. Trainor, Harald G. L. Schwefel, Ashton S. Bradley. 2019-07-24. Steady states, squeezing, and entanglement in intracavity triplet down conversion. https://arxiv.org/abs/1907.09572

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