The nonlinear coherent coupler

Unidirectional nonlinearPT-symmetric optical structures

“…2a,b and 2c,d respectively. In contrast to the γ = 0 case [9], now the dynamics is non-reciprocal with respect to the axis of symmetry of the system. While this is true for both values of non-linearity strength χ, it is much more pronounced for the case of Figs.…”

“…[7,8] where a PT dual coupled structure was fabricated and the beam dynamics was investigated. Here we show that the interplay of non-reciprocal dynamics arising from PT -symmetry [8], and self-trapping phenomena associated with Kerr nonlinearities [9], can mold the flow of light in a surprising way. Such novel directed dynamics can be exploited in the realization of a new generation of optical isolators or diodes.…”

Quantum Statistical Properties of the Codirectional Kerr Nonlinear Coupler in Terms of su 2 $\left (2\right ) $ Lie Group in Interaction with a Two-level Atom

“…The optical coupler is a device composed of two (or more) waveguides, which are placed close enough to allow exchanging energy between waveguides via evanescent waves [1]. Recently, this device has attracted much attention for several reasons.…”

Coexistence of Josephson Oscillations and a Novel Self-Trapping Regime in Optical Waveguide Arrays

“…The optical realization of a bosonic junction had been theoretically proposed much earlier by Jensen [10] who considered light power oscillations in two coupled nonlinear waveguides.…”

“…An explicit solution of (10) in terms of Jacobi elliptic functions has been found in [10] and used in Bose-Einstein condensates in [9]. It has a simple form when all the power is initially injected into one array, say |ψ 1 (0)| = 1, |ψ 2 (0)| = 0.…”