Exploring the properties of theVB-defect in hBN: optical spin polarization, Rabi oscillations, and coherent nuclei modulation.

Optically active point defects in semiconductors have received great attention in the field of solid-state quantum technologies. Hexagonal boron nitride, with an ultra-wide band gapEg= 6 eV, containing a negatively charged boron vacancy (VB-) with unique spin, optical, and coherent properties presents a new two-dimensional platform for the implementation of quantum technologies. This work establishes the value ofVB-spin polarization under optical pumping with= 532 nm laser using high-frequency (= 94 GHz) electron paramagnetic resonance (EPR) spectroscopy.

Excitation and coherent control of spin qudit modes in silicon carbide at room temperature.

One of the challenges in the field of quantum sensing and information processing is to selectively address and coherently manipulate highly homogeneous qubits subject to external perturbations. Here, we present room-temperature coherent control of high-dimensional quantum bits, the so-called qudits, associated with vacancy-related spins in silicon carbide enriched with nuclear spin-free isotopes. In addition to the excitation of a spectrally narrow qudit mode at the pump frequency, several other modes are excited in the electron spin resonance spectra whose relative positions depend on the external magnetic field.

Optically Addressable Silicon Vacancy-Related Spin Centers in Rhombic Silicon Carbide with High Breakdown Characteristics and ENDOR Evidence of Their Structure.

We discovered a family of uniaxially oriented silicon vacancy-related centers with S=3/2 in a rhombic 15R-SiC crystalline matrix. We demonstrate that these centers exhibit unique characteristics such as optical spin alignment up to the temperatures of 250°C. Thus, the range of robust optically addressable vacancy-related spin centers is extended to the wide class of rhombic SiC polytypes.

[Pharmacological correction of the psycho-emotional status in breast cancer patients in the postoperative period].

It was established the presence of psychological disorders in 120 breast cancer patients in postoperative chemotherapy and considered the need for correction of revealed changes in the psychoemotional sphere to improve the quality of life of patients. The use of psychotropic drugs to correct the mental and emotional status in 80 women has improved their status, had a positive effect on the postoperative course, and helped to create the installation for continued treatment.

Silicon carbide light-emitting diode as a prospective room temperature source for single photons.

Generation of single photons has been demonstrated in several systems. However, none of them satisfies all the conditions, e.g.