  We considered one-dimensional chain of the two-level quantum systems coupled
via tunneling. The chain is driven by the superposition of dc and ac fields in
the strong coupling regime. Based on the fundamental principles of
electrodynamics and quantum theory, we developed a generalized model of quantum
dynamics for such interactions, free of rotating wave approximation (RWA). The
system of motion equations was studied numerically. We analyzed the dynamics
and spectra of inversion density, dipole current density and tunneling current
density. In the case of resonant interaction with ac-component the particle
dynamics exhibits itself in the oscillatory regime, which may be interpreted as
a combination of Rabi- and Bloch oscillations with their strong mutual
influence. Such scenario for an obliquely incident ac field dramatically
differs from the individual picture both types of oscillations due to an
interactions. This novel effect is counterintuitive because of the strongly
different frequency ranges for such two types of oscillations existence. This
dynamics manifests itself in multi-line spectra at different combinations of
Rabi- and Bloch frequencies. The effect is promising as a framework of new type
of spectroscopy in nanoelectronics and electrical control of nano-devices.
