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Non-exponential decay via tunneling in tight-binding lattices and the optical Zeno effect

Stefano Longhi
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Abstract

An exactly-solvable model for the decay of a metastable state coupled to a semi-infinite tight-binding lattice, showing large deviations from exponential decay in the strong coupling regime, is presented. An optical realization of the lattice model, based on discrete diffraction in a semi-infinite array of tunneling-coupled optical waveguides, is proposed to test non-exponential decay and for the observation of an optical analog of the quantum Zeno effect.

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Stefano Longhi. 2006-11-15. Non-exponential decay via tunneling in tight-binding lattices and the optical Zeno effect. https://doi.org/10.1103/physrevlett.97.110402

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