81 citations · 190 across the 17 of their papers we have counts for
17 papers
Fast qubits of optical frequencies on the rare-earth ions in fluoride crystals and color centers in diamond
Vladimir Hizhnyakov, Vadim Boltrushko, Aleksander Shelkan +1
Fluoride crystals doped with rare-earth ions (REI) and pair centers in diamond for fast () quantum computers (FQC) are proposed. As specific systems for REI doping,…
Rare Earth Ions Doped Mixed Crystals for Fast Quantum Computers with Optical Frequency Qubits
Vladimir Hizhnyakov, Vadim Boltrushko, Helle Kaasik +1
The possibility of using mixed crystals highly doped with rare earth ions (REIs) as physical systems for creating fast quantum computers with a sampling time of nanoseconds is disc…
Phase separation and pairing fluctuations in oxide materials
A. Bill, V. Hizhnyakov, R. K. Kremer +3
We investigate the microscopic mechanism of charge instabilities and the formation of inhomogeneous states in systems with strong electron correlations. It is demonstrated that wit…
Enhanced mobility of high-frequency discrete breathers in a monatomic chain with odd anharmonicity
Aleksander Shelkan, Mihhail Klopov, Vladimir Hizhnyakov
The mobility of high-frequency discrete breathers in monatomic chains with nonlinear interatomic potentials of the nearest neighbours is considered. It was found that the odd (cubi…
Steps towards the experimental realization of surface plasmon polariton enhanced spontaneous parametric down-conversion
Ardi Loot, Ilmo Sildos, Valter Kiisk +2
The realization of efficient and miniature source of entangled photon pairs stills remains a challenge. In this work, we experimentally studied the possibility to enhance the proce…
Intrinsic localized modes in two atomic chain; reduction of cubic anharmonicity for gap modes
Vladimir Hizhnyakov
Analytical theory of large size intrinsic localized modes (ILMs) in anharmonic two-atomic chain is presented. It is shown that ILMs with frequencies close to the borders of phonon…