247 citations · 349 across the 7 of their papers we have counts for
8 papers
Design of quantum backflow in the complex plane
Ioannis Chremmos
A way is presented to design quantum wave functions that exhibit backflow, namely negative probability current despite having a strictly positive spectrum of momentum. These wave f…
Spiral Transformation for High-Resolution and Efficient Sorting of Optical Vortex Modes
Yuanhui Wen, Ioannis Chremmos, Yujie Chen +3
Mode sorting is an essential function for optical systems exploiting the orthogonality of photonic orbital angular momentum mode space. The familiar log-polar optical transformatio…
Suboscillations with arbitrary shape
Ioannis Chremmos, Yujie Chen, George Fikioris
We report a method for constructing bandpass functions that approximate a given analytic function with arbitrary accuracy over a finite interval. A corollary is that bandpass funct…
Superoscillations with arbitrary polynomial shape
Ioannis Chremmos, George Fikioris
We present a method for constructing superoscillatory functions the superoscillatory part of which approximates a given polynomial with arbitrarily small error in a fixed interval.…
Non-diffracting chirped Bessel waves in optical antiguides
Ioannis Chremmos, Melpomeni Giamalaki
Chirped Bessel waves are introduced as stable (non-diffracting) solutions of the paraxial wave equation in optical antiguides with a power-law radial variation in their index of re…
Dynamic Effective Medium Theory for Two-Dimensional Non-Magnetic Metamaterial Lattices using Multipole Expansion
Ioannis Chremmos, Efthymios Kallos, Melpomeni Giamalaki +2
We present a formulation for deriving effective medium properties of infinitely periodic two-dimensional metamaterial lattice structures beyond the static and quasi-static limits.…
Temporal cloaking with accelerating wave packets
Ioannis Chremmos
We theoretically propose a temporal cloaking scheme based on accelerating wave packets. A part of a monochromatic lightwave is endowed with a discontinuous nonlinear frequency chir…
Nonparaxial accelerating Bessel-like beams
Ioannis D. Chremmos, Nikolaos K. Efremidis
A new class of nonparaxial accelerating optical waves is introduced. These are beams with a Bessel-like profile that are capable of shifting laterally along fairly arbitrary trajec…