Optical nonlinear conversion processes are ubiquitously applied to scientific as well as
industrial tasks. In particular, nonlinear processes are employed to generate radiation in …

The quantum revolution of the 20th century culminated in the development of quantum
optics and the study of nonclassical light. By the beginning of this century, scientific …

Statistical distributions of the analog readings of an antenna-coupled THz superconducting
bolometer were measured and analyzed under a special type of irradiation by low-energy …

An experimental scheme and data processing approaches are proposed for measuring by
analog photo detectors the normalized second-order correlation function of the biphoton …

Floodlight quantum key distribution (FL-QKD) is a new QKD protocol that can achieve a 2
Gbps secret key rate (SKR) in a 50 km fiber link without multiplexing technology [Q. Zhuang …

Tunable biphotons are highly important for a wide range of quantum applications. For some
applications, especially interesting are cases where two photons of a pair are far apart in …

The theoretical and experimental investigation results of the generation of the polarization-
entangled photon pairs operating at visible wavelengths are reported. The generation of …

Pairs of entangled photons—biphotons—are indispensable in quantum applications.
However, some important spectral ranges, like the ultraviolet, have been inaccessible to …

The second-order correlation function which characterizes the quantum correlation between
the optical and terahertz photons generated under spontaneous parametric down …

Quantum-optical technologies based on parametric light down-conversion are not yet
applied in the terahertz frequency range. This is owing to the complexity of detecting single …