PT-Symmetry is one of the interesting topics in quantum mechanics and optics. One of the demonstration of PT-Symmetric effects in optics is appeared in the nonlinear directional coupler (NLDC). In the paper we numerically investigate the stability of temporal bright solitons propagate in a PT-Symmetric NLDC by considering gain in bar and loss in cross. By using the analytical solutions of pertu...

Quantum linear optics provides a promising candidate for the realization of quantum computation. The computational power of quantum optics varies with what input states, gate sets, and measurements are present in the model. Quantum linear optics with single photon input states and adaptive measurements is universal for quantum computation [6]. Using non-adaptive measurements reduces the computa...

We show that arbitrary family of universal quantum gates can be implemented in integrated optics based on single optical hybrid/Mach-Zehnder interferometer/directional coupler and highly nonlinear optical fibers (HNLFs). We also show how to implement the Bell states preparation circuit and quantum relay, needed in quantum teleportation systems, using the same technology. Finally, we study the i...

Alessandro Fedrizzi, Rupert Ursin, Thomas Herbst, Matteo Nespoli, Robert Prevedel, Thomas Scheidl, Felix Tiefenbacher, Thomas Jennewein, and Anton Zeilinger Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Wien, Austria Quantum Optics, Quantum Nanophysics and Quantum Information, Faculty of Physics, University of Vienna, Boltzmanngasse 5...