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5 papers · 2 filters
The quantum cryptographic switch
Srinatha Narayanaswamy, Omkar Srikrishna, R. Srikanth +2
We illustrate using a quantum system the principle of a cryptographic switch, in which a third party (Charlie) can control to a continuously varying degree the amount of informatio…
Relativistic quantum chemistry on quantum computers
Libor Veis, Jakub Višňák, Timo Fleig +4
Last years witnessed a remarkable interest in application of quantum computing for solving problems in quantum chemistry more efficiently than classical computers allow. Very recen…
Generation of squeezed light in a nonlinear asymmetric directional coupler
Faisal A. A. El-Orany, J. Perina, M. Sebawe Abdalla
We show that a nonlinear asymmetric directional coupler composed of a linear waveguide and a nonlinear waveguide operating by nondegenerate parametric amplification is an effective…
Photoelectron ionization spectra in a system interacting with a neighbor atom
Jan Perina, Antonin Luks, Wieslaw Leonski +1
Photoelectron ionization spectra of a system interacting with a neighbor two-level atom are investigated using the Laplace-transform method. These spectra are typically composed of…
Randomly poled crystals as a source of photon pairs
Jan Perina, Jiri Svozilik
Generation of photon pairs from randomly poled nonlinear crystals is investigated using analytically soluble model and numerical calculations. Randomly poled crystals are discovere…