4 papers
Iterative -gate-based protocol for squeezed Schrödinger cat state engineering
Roman Goncharov, N. G. Veselkova, Alexei D. Kiselev
Squeezed optical Schrödinger cat states constitute a key resource for both fundamental tests of quantum theory and up-to-date quantum technologies. We propose a measurement-assiste…
Asymmetry effects in homodyne and heterodyne measurements: Positive operator-valued measures and asymptotic security of Gaussian-continuous-variable quantum key distribution
A. S. Naumchik, Roman K. Goncharov, Alexei D. Kiselev
We use the Gaussian approximation describing photocount statistics for both the homodyne and the double homodyne (heterodyne) measurements to study asymmetry effects arising from i…
Sub-Poissonian light in fluctuating thermal-loss bosonic channels
Iliya G. Stepanov, Roman K. Goncharov, Alexei D. Kiselev
We study the photon statistics of a single-mode sub-Poissonian light propagating in the temperature-loss bosonic channel with fluctuating transmittance which can be regarded as a t…
Creation and manipulation of Schrödinger cat states based on semiclassical predictions
N. G. Veselkova, Roman Goncharov, Alexei D. Kiselev
We consider the generation of Schr{ö}dinger cat states using a quantum measurement-induced logical gate where entanglement between the input state of the target oscillator and the…