Theoretical investigation of moiré patterns in quantum images

Moiré patterns in quantum images

We observed moiré fringes in spatial quantum correlations between twin photons generated by parametric down-conversion. Spatially periodic structures were nonlocally superposed giving rise to beat frequencies typical of moiré patterns. This result brings interesting perspectives regarding metrological applications of such a quantum optical setup.

Quantum Walk and Quantum Rings. Effects of a Magnetic Field applied and construction of Quantum Walk by a Moire pattern

Quantum Rings have been simulated so far in many ways, but in this work a new aproximation is deemed. We use particles without angular momentum and several spectra, for different geometric settings, are gotten. These spectra depends on K, not on L. The application of a magnetic field is also analysed, and an Aharonov-Bohm kind of effect is observed. Some new math technique is introduced as well. We think that with this new approach the spectrum matrix can be treated in a distinct way, and in such a manner is how we get to handle the Moire pattern spectrum. Furthermore, we show that two electro…

Observation of Anomalous Moiré Patterns

Moiré patterns are omnipresent. They are important for any overlapping periodic phenomenon, from vibrational and electromagnetic, to condensed matter. Here we show, both theoretically and via experimental simulations by ultracold atoms, that for one-dimensional finite-size periodic systems, moiré patterns give rise to anomalous features in both classical and quantum systems. In contrast to the standard moiré phenomenon, in which the pattern periodicity is a result of a beat-note between its constituents, we demonstrate moiré patterns formed from constituents with the same periodicity. Surprisi…

非厄米Wannier-Stark ladder系统中的动态类莫尔图案

Dynamic Moiré-like pattern in non-Hermitian Wannier-Stark ladder system

该研究针对非厄米Wannier-Stark ladder系统，采用非厄米Floquet方法分析其在外场下的动力学行为，揭示了例外点分隔的两类动力学区域及非线性场下的动态类莫尔图案。

Magnetic domains in 2D moiré lattices with square and hexagonal symmetry

We report the persistence of magnetic domains lying in moiré patterns with square and hexagonal symmetries. Our investigation is based on the dynamical description of two magnetic domains represented by a two species bosonic mixture of $^{87}$Rb ultracold atoms, being each specie initially localized in the left and right halves of a moiré lattice defined by a specific angle $θ$. To demonstrate the persistence of such initial domains, we follow the time evolution of the superfluid spin texture, and in particular, the magnetization on each halve. The two-component superfluid, confined in the moi…

莫尔图案化石墨烯/碘化铅中的陈氏结

Chern junctions in Moiré-Patterned Graphene/PbI2

研究莫尔超晶格在异质结构中的磁输运特性，发现电中性点处的无耗散输运及2/3 e²/h量子化平台，归因于莫尔调制与常规整数量子霍尔态之间的陈氏结。