Quantum correlation in dephasing decay and its effect on interference in three-level systems

We evaluate the localization length of the wave solution of a random potential characterized by an arbitrary autocorrelation function. We go beyond the Born approximation to evaluate the localization length using a non-linear approximation and calculate all the correlators needed for the localization length expression. We compare our results with numerical results for the special case, where the autocorrelation decays quadratically with distance. We look at disorder ranging from weak to strong disorder, which shows excellent agreement. For the numerical simulation, we introduce a generic method to obtain a random potential with an arbitrary autocorrelation function. The correlated potential is obtained in terms of the convolution between a Wiener stochastic potential and a function of the correlation.

show abstract

“…This expression is similar to the result obtained in [46]. The argument arg of the exponential can be evaluated as…”

Section: A1 Evaluating C 0 (X)supporting

confidence: 78%

One dimensional localization for arbitrary disorder correlations

Eleuch

Hilke

2019

Eur. Phys. J. B

View full text Add to dashboard Cite

show abstract

Observation of Aulter–Townes splitting in subwavelength grating metamaterial ring resonators

et al. 2023

APL Photonics

View full text Add to dashboard Cite

Subwavelength grating metamaterial (SGM) waveguide is typically treated as a homogeneous medium without considering the intra-waveguide reflection. However, this approximation is not always valid, especially in resonators. Inthis paper, we show that the reflection induced mutual coupling between the clock-wise (CW) and counter clock- wise(CCW) resonant modes in subwavelength grating metamaterial waveguide ring resonator (SGMRR) breaks the degeneracy of the two modes, leading to the formation of Autler-Townes splitting (ATS). This phenomenon could beleveraged to improve the detection limit of SGMRR based sensors.

show abstract