Abstract
We study a pair of anharmonic optical cavities that is connected by an optical fiber. The photonic spectral density characterizes the evolution of the coupled cavities after the system has been prepared in a Fock or N00N state. We evaluate the photonic spectral density within the recursive projection method and find that the anharmonicity leads to a collapse of the low-energy spectrum. The level spacing of the remaining spectrum agrees quite well with that of the harmonic cavities, whereas the spectral weights are strongly affected by the anharmonicity.
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Ziegler, K. Photonic spectral density of coupled optical cavities. Laser Phys. 22, 331–337 (2012). https://doi.org/10.1134/S1054660X1201032X
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DOI: https://doi.org/10.1134/S1054660X1201032X