This paper has been prepared by the Symphony collaboration (University of Warsaw,
Uniwersytet Jagielloński, DESY/CNR and ICFO) on the occasion of the 25th anniversary of …

Attosecond science is based on electron dynamics driven by a strong optical electric field
and has evolved beyond its original scope in gas-phase atomic and molecular physics to …

Recently two emerging areas of research, attosecond and nanoscale physics, have started
to come together. Attosecond physics deals with phenomena occurring when ultrashort laser …

Plasmonic antennas can enhance the intensity of a nanojoule laser pulse by localizing the
electric field in their proximity. It has been proposed that the field can become strong enough …

Plasmonic high-harmonic generation (HHG) drew attention as a means of producing
coherent extreme ultraviolet (EUV) radiation by taking advantage of field enhancement …

Light-matter entanglement plays a fundamental role in many applications of quantum
information science. Thus, finding processes where it can be observed is an important task …

We study high-order harmonic generation (HHG) resulting from the illumination of plasmonic
nanostructures with a short laser pulse of long wavelength. We demonstrate that both the …

We present a theoretical investigation of high-order harmonic generation in spatially
inhomogeneous two-color laser fields by solving three dimensional time dependent …

We present numerical simulations of high-order harmonic generation in helium using a
temporally synthesized and spatially nonhomogeneous strong laser field. The combination …

One of the current challenges in high-harmonic generation is to extend the harmonic cutoff
to increasingly high energies while maintaining or even increasing the efficiency of the high …