Superconductors and semiconductors are crucial platforms in the field of quantum
computing. They can be combined to hybrids, bringing together physical properties that …

Germanium/Silicon-Germanium (Ge/SiGe) multiple quantum wells receive great attention for
the realization of Si-based optical modulators, photodetectors, and light emitters for short …

The integration of Ge on Si for photonics applications has reached a high level of maturity:
Ge photodetectors are available on the Si platform in foundry processes, and Si/Ge …

n-type Ge/SiGe terahertz quantum cascade lasers are investigated using non-equilibrium
Green's functions calculations. We compare the temperature dependence of the terahertz …

We calculate band-to-band radiative transition rate spectra in pure Ge as functions of
applied tensile strain, heavy doping, charge injection density, and temperature. Direct and …

A parabolic potential that confines charge carriers along the growth direction of quantum
wells semiconductor systems is characterized by a single resonance frequency, associated …

Theoretical predictions indicate that the n-type Ge/Si-Ge multi-quantum-well system is the
most promising material for the realization of a Si-compatible THz quantum cascade laser …

We present a theoretical investigation of guided second harmonic generation at THz
frequencies in SiGe waveguides embedding n-type Ge/SiGe asymmetric coupled quantum …

Control and manipulation of quantum states by light are increasingly important for both
fundamental research and applications. This can be achieved through the strong coupling …

The possibility to reduce the thickness of the SiGe virtual substrate, required for the
integration of Ge heterostructures on Si, without heavily affecting the crystal quality is …