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18 papers · 2 filters
Quantum simulation of fermionic systems using hybrid digital-analog quantum computing approach
Nikita Guseynov, Walter Pogosov
We consider a hybrid digital-analog quantum computing approach, which allows implementing any quantum algorithm without standard two-qubit gates. This approach is based on the alwa…
QND measurements of photon number in monolithic microcavities
S. N. Balybin, A. B. Matsko, F. Ya. Khalili +5
We revisit the idea of quantum nondemolition measurement (QND) of optical quanta via a resonantly enhanced Kerr nonlinearity taking into account quantum back action and show that t…
Peculiarities of Interaction of a Quantum Dot with Non-Classical Light in the Self-Phase Modulation Regime
Stepan N. Balybin, Roman V. Zakharov, Olga V. Tikhonova
Influence of the self-phase modulation of quantum light on the induced resonant excitation of a semiconductor quantum dot is studied analytically in the case of the Kerr-nonlineari…
The Wigner function negative value domains and energy function poles of the polynomial oscillator
E. E. Perepelkin, B. I. Sadovnikov, N. G. Inozemtseva +2
For a quantum oscillator with the polynomial potential an explicit expression that describes the energy distribution as a coordinate (and momentum) function is obtained. The presen…
Comparative analysis of the Compton ionization of Hydrogen and Positronium
Ivan S. Stepantsov, Yuri V. Popov, Igor P. Volobuev
The paper deals with the Compton disintegration of positronium and a comparison of the differential cross sections of this process with the similar cross sections in the case of th…
Reachable sets for two-level open quantum systems driven by coherent and incoherent controls
Lev Lokutsievskiy, Alexander Pechen
In this work, we study controllability in the set of all density matrices for a two-level open quantum system driven by coherent and incoherent controls. In [A. Pechen, Phys. Rev.…