24 citations · 65 across the 10 of their papers we have counts for
10 papers
Passive state preparation for quantum key distribution with phase encoding
Roman Shakhovoy
We propose here a method of passive state preparation for quantum key distribution with phase encoding based on the measurement of the phase difference between pulses of a gain-swi…
Influence of optical self-injection on statistical properties of laser-pulse interference
Roman Shakhovoy, Elizaveta Maksimova, Matvey Boltanskiy +1
Pulsed optical self-injection markedly affects the emission characteristics of semiconductor lasers. In this work, we analyze its influence on the statistical properties of laser-p…
Digitization of a random signal from the interference of laser pulses
Roman Shakhovoy
In the study of quantum random number generators (QRNGs), the problem of random signal digitization is often not considered in detail. However, in the context of a standalone QRNG…
Gain-switched vcsel as a quantum entropy source: the problem of quantum and classical noise
Roman Shakhovoy, Elizaveta Maksimova
We consider the problem of quantum noise extraction from polarization swapping in a gain-switched VCSEL. The principle of operation of a quantum random number generator is based on…
Phase randomness in a semiconductor laser: Issue of quantum random-number generation
Roman Shakhovoy, Marius Puplauskis, Violetta Sharoglazova +10
Gain-switched lasers are in demand in numerous quantum applications, particularly, in systems of quantum key distribution and in various optical quantum random number generators. T…
Wavelength- and time-division multiplexing via pump current variation of a pulsed semiconductor laser -- a method of synchronization for quantum key distribution
Roman Shakhovoy, Marius Puplauskis, Violetta Sharoglazova +4
The dependence of the semiconductor laser wavelength on the pump current is a well-known phenomenon, which is generally attributed to a change in the refractive index of the active…
Phase randomness in a gain-switched semiconductor laser: stochastic differential equation analysis
Roman Shakhovoy, Alexander Tumachek, Natalia Andronova +2
We performed theoretical analysis of the phase randomness in a gain-switched semiconductor laser in the context of its application as a quantum entropy source. Numerical simulation…
Direct phase modulation via optical injection: theoretical study
Roman Shakhovoy, Marius Puplauskis, Violetta Sharoglazova +4
Direct phase modulation via optical injection is a newly developed method for coding the phase of a gain-switched laser, which meets high requirements placed on transmitters for qu…
Quantum noise extraction from the interference of laser pulses in optical quantum random number generator
Roman Shakhovoy, Denis Sych, Violetta Sharoglazova +3
We propose a method for quantum noise extraction from the interference of laser pulses with random phase. Our technique is based on the calculation of a parameter, which we called…
Influence of chirp, jitter and relaxation oscillations on probabilistic properties of laser pulse interference
Roman Shakhovoy, Violetta Sharoglazova, Alexander Udaltsov +3
Interference of laser pulses is an essential ingredient of quantum randomness; therefore, probabilistic properties of laser pulses gains new relevance. Here, we consider in detail…