Attosecond pulses are generated by a macroscopic number of ionizing atoms interacting
with a focused laser pulse, via the process of high harmonic generation. The physics of their …

High-energy isolated attosecond pulses required for the most intriguing nonlinear
attosecond experiments as well as for attosecond-pump/attosecond-probe spectroscopy are …

We demonstrate the generation of a coherent water window x ray by extending the plateau
region of high-order harmonics under a neutral-medium condition. The maximum harmonic …

Quantum optics with X-rays has long been a somewhat exotic activity, but it is now rapidly
becoming relevant as precision x-ray optics and novel X-ray light sources, and high-intensity …

We consider a Josephson junction where the weak link is formed by a noncentrosymmetric
ferromagnet. In such a junction, the superconducting current acts as a direct driving force on …

The development of compact and commercially available table-top, ultra-short pulse laser
systems with pulse energies of the order of a few mJ, pulse durations of less then 30fs and …

In the past two decades high-harmonic generation (HHG) has become a key process in
ultrafast science due to the extremely short time structure of the underlying electron …

High-order harmonic generation (HHG) in gases has been established as an important
technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time …

We study Josephson current in superconductor/diffusive ferromagnet/superconductor
junctions by using the recursive Green function method. When the exchange potential in a …

I derive a general set of boundary conditions for quasiclassical transport theory of metals
and superconductors that is valid for equilibrium and nonequilibrium situations and includes …