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15 papers · 2 filters
Giant Narrowband Twin-Beam Generation along the Pump Energy Propagation
Angela M. Perez, Kirill Yu. Spasibko, Polina R. Sharapova +3
Walk-off effects, originating from the difference between the group and phase velocities, limit the efficiency of nonlinear optical interactions. While transverse walk-off can be e…
Numerical and analytical research of the impact of decoherence on quantum circuits
Yu. I. Bogdanov, A. Yu. Chernyavskiy, B. I. Bantysh +5
Three different levels of noisy quantum schemes modeling are considered: vectors, density matrices and Choi-Jamiolkowski related states. The implementations for personal computers…
The study of amplitude and phase relaxation impact on the quality of quantum information technologies
Yu. I. Bogdanov, B. I. Bantysh, A. Yu. Chernyavskiy +2
The influence of amplitude and phase relaxation on evolution of quantum states within the formalism of quantum operations is considered. The model of polarizing qubits where noises…
Schmidt modes in the angular spectrum of bright squeezed vacuum
Polina R. Sharapova, Angela M. Perez, Olga V. Tikhonova +1
We study the spatial properties of high-gain parametric down-conversion (PDC). From the Hamiltonian we find the Schmidt modes, apply the Bloch-Messiah reduction, and calculate anal…
Observation of generalized optomechanical coupling and cooling on cavity resonance
Andreas Sawadsky, Henning Kaufer, Ramon Moghadas Nia +4
Optomechanical coupling between a light field and the motion of a cavity mirror via radiation pressure plays an important role for the exploration of macroscopic quantum physics an…
Low-noise macroscopic twin beams
Timur Sh. Iskhakov, Vladyslav C. Usenko, Radim Filip +2
Applying a multiphoton-subtraction technique to two-color macroscopic squeezed vacuum state of light generated via high-gain parametric down conversion we conditionally prepare a n…