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6 papers · 2 filters
Quantum properties of the parametric amplifier with and without pumping field fluctuations
Faisal A. A. El-Orany, J. Perina, M. Sebawe Abdalla
The parametric amplifier with and without the pumping fluctuations of coupling function is considered when the fields are initially prepared in coherent light. The pumping fluctuat…
Cryptohermitian Picture of Scattering Using Quasilocal Metric Operators
Miloslav Znojil
One-dimensional unitary scattering controlled by non-Hermitian (typically, -symmetric) quantum Hamiltonians is considered. Treating these operators via…
Surface spontaneous parametric down-conversion
Jan Perina, Antonin Luks, Ondrej Haderka +1
Surface spontaneous parametric down-conversion is predicted as a consequence of continuity requirements for electric- and magnetic-field amplitudes at a discontinuity of chi2 nonli…
Spectral filtering in quantum Y-junction
Taksu Cheon, Pavel Exner, Ondrej Turek
We examine scattering properties of singular vertex of degree and , taking advantage of a new form of representing the vertex boundary condition, which has been devised…
Approximation of a general singular vertex coupling in quantum graphs
Taksu Cheon, Pavel Exner, Ondrej Turek
The longstanding open problem of approximating all singular vertex couplings in a quantum graph is solved. We present a construction in which the edges are decoupled; an each pair…
Correlations in photon-numbers and integrated intensities in parametric processes involving three optical fields
Jan Perina, Jaromir Krepelka, Maria Bondani +2
Two strongly-pumped parametric interactions are simultaneously realized in a single nonlinear crystal in order to generate three strongly correlated optical fields. By combining to…