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quant-ph2026
Effective Quantization of Lossy Nonlinear Epsilon-Near-Zero Media
Avishi Poddar, Jonas von Milczewski, Durdu O. Guney +2
In epsilon-near-zero (ENZ) materials, the vanishing real linear permittivity results in the leading-order contribution to the displacement field being nonlinear in the electric fie…
quant-ph2026
Optical depth dictates universal bounds on many-body decay in atomic ensembles
Cosimo C. Rusconi, Eric Sierra, Wai-Keong Mok +3
Cooperative emission is well understood for idealized symmetric systems, but its fundamental limits in spatially extended, free-space ensembles remain an open question. Here, we de…